The umbilicate or imperforate shell has a globose-turbinate shape. It is umbilicate or imperforate. The whorls are rounded and with spirally granose revolving ribs. The aperture is subcircular.
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The height of the shell is 0.6 mm, its diameter 0.9 mm. The minute, thin, white shell has a turbinate shape. It is widely umbilicate. The spire is slightly umbilicate.
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The white, thin, umbilicate, and depressed shell is markedly broader (8.35 mm) than high (5.65 mm). It is translucent nacreous.
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The shell has a depressed-conical shape. It is widely umbilicate. The convex whorls are concentrically granose-lirate. The sutures are canaliculate.
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The subdiscoidal shell is umbilicate. The spire is depressed. The whorls are rounded and the body whorl is descending. The aperture is circular.
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The shell reaches a height of 4 mm. The minute, umbilicate shell is suborbicular. The apex is obtuse. The shell is spirally impressed- striate.
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The solid, conical shell is umbilicate or imperforate. The spire is elevated or depressed. The oblique aperture is subrhomboidal. The outer lip is smooth within.
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Melo umbilicatus, common name the heavy baler or umbilicate melon, is a very large sea snail, a marine gastropod mollusc in the family Volutidae, the volutes.
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The height of the shell attains 20 mm. The thin, whitish, opalescent shell has a depressed turbinate shape. It is narrowly umbilicate. It contains 5 whorls.
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The height of the shell attains 16 mm. The umbilicate shell has a conical shape. It is finely sculptured. The aperture is subquadrate wit thin lips.
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The height of the thin, white shell attains 2.3 mm. It is strongly depressed with a width of 6.85 mm. It is umbilicate and translucent nacreous.
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The shell has a depressed conical shape and is deeply umbilicate. It contains six whorls. The three apical whorls are small and thin. The aperture is round.
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The size of the shell attains 54 mm. The umbilicate shell has a globose-conoid shape. Its color pattern is green, rufous marbled. The whorls are rounded.
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The conical shell is false- umbilicate. The periphery is angular. The base of the shell is nearly flat, or concave. The outer surface is smooth, costate or granular.
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The shell reaches a height of 0.8 mm. The small shell is turbinately depressed and umbilicate. It is sordidly white, dull, and thin. The spire is low and tabulated.
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The height of the shell attains 4 mm, its diameter 6 mm. The umbilicate shell has a conical shape. It has five, striated, ventricose whorls. The two apical whorls are white.
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The height of the shell attains 14 mm. The light-yellow turreted-conic shell is narrowly umbilicate. The eight whorls are nearly plane. They are encircled by numerous unequal granuliferous riblets.
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An umbilicate lichen is a lichen that is only attached to its substrate at a single point.Lichen Vocabulary, LICHENS OF NORTH AMERICA, Sylvia and Stephen Sharnoff, An example is Lasallia papulosa.
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The height of the shell attains 3.5 mm. The small, thin shell is narrowly umbilicate. The spire is globose-depressed, and conoidal. It is subtransparent, corneous or bluish white in color.
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The fusiform shell is not umbilicate, anteriorly rostrate and obliquely folded. The shell is spirally furrowed by lirae. The aperture ends in a short siphonal canal. The simple columella is not folded.
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The shell grows to a length of 6 mm. The narrowly umbilicate shell is depressed conoidal, and solid. This lusterless shell is whitish. The upper surface is spirally banded with dark brown.
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The shell grows to a height of 4 mm. The umbilicate, rather thick, whitish, subvitreous shell has a conic-depressed shape. The apex is obtuse. The first 3 whorls are planate above.
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The height of the shell attains 12 mm, its diameter 14 mm. The solid, white shell is umbilicate. The spire is short and depressed at the apex. The shell contains 4 whorls.
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The ovate shell is rather depressed. The small spire is scarcely elevated and narrowly, profoundly umbilicate. The 2½ convex whorls are decussated by elevated radiating and concentric striae. The oblique aperture is suborbicular.
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The length of the shell varies between 10 mm and 23 mm. The umbilicate, conoidal shell is olivaceous or yellowish. It is ornamented with obliquely longitudinal tawny stripes. The entire surface is smooth.
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The size of the shell varies between 4 mm and 15 mm. The umbilicate, solid shell has a conical shape. It has a bright rose or carmine color. The elevated spire is acute.
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The height of the shell attains 10 mm, its diameter 9 mm. The thin, small, umbilicate shell has a turbinate shape. The convex whorls increase gradually. They are slightly flattened below the suture.
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The height of the shell attains 1.3 mm, its diameter 1.7 mm. The very small, umbilicate shell has a turbinate shape. It is white and translucent. It is distantly ribbed, and radiately striate.
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Umbilicus rupestris, the navelwort, penny-pies or wall pennywort, is a fleshy, perennial, edible flowering plant in the stonecrop family Crassulaceae in the genus Umbilicus so named for its umbilicate (navel-like) leaves.
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The height of the shell attains 6 mm and the diameter 7.5 mm. The strong, globose shell is narrowly and deeply umbilicate. It has the color of pale straw. The shell contains four whorls.
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Lasallia papulosa (common toadskin) is an umbilicate lichen (a lichen attached to its substrate at a single point).Lichen Vocabulary, LICHENS OF NORTH AMERICA, Sylvia and Stephen Sharnoff, It is in the family Umbilicariaceae.
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The small shell is spirally lirate, depressed, and umbilicate. The body whorl is deflected toward the aperture. The oblique aperture is rounded-quadrangular. The terminations of the lips are approaching, connected by a callus.
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The size of the shell varies between 17 mm and 35 mm. This is an abundant species. The solid, widely, deeply umbilicate shell has a low- conical shape. There is great variation in color.
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The height of the shell attains 5 mm, its diameter 8 mm. The delicate, turbinate shell is narrowly umbilicate. Its exterior is pale, white- straw but pearly inside. The shell contains 5 bulbous whorls.
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The size of the shell varies between 15 mm and 30 mm. The thick, solid, umbilicate shell has a conical shape and has a blackish color. The spire is conoidal. The apex is rather blunt.
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The minute, thin shell has a height of only 2 mm. Its shape is orbicular- depressed, oblique, narrowly umbilicate, transversely minutely costulate. It has a pale rose-color, tessellated with purple. The spire is obtuse.
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The length of the shell varies between 20 mm and 50 mm. The solid, umbilicate shell has a pointed- ovate shape. Its color pattern is greenish, longitudinally flammulated with black. The conic spire is pointed.
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The size of the shell varies between 20 mm and 50 mm. The solid, umbilicate shell has a depressed-globose shape with a strong spiral sculpture. The spire is obtuse. The suture is slightly undulating.
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The shell grows to a length of 18 mm. The depressed conical shell is very deeply false-umbilicate and rather thin. The spire has convex outlines;. The apex is acute, and lemon yellow when eroded.
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The height of the shell attains 14 mm, its diameter also 14 mm. The solid shell has a gradate conical shape. It is subdepressed and narrowly umbilicate,. Its color is white-ochraceous or white-cinereous.
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The size of the shell varies between 10 mm and 21 mm. The thick, umbilicate shell has an orbiculate-conical shape. It is transversely narrowly granulose-sulcate. It has a uniform brownish or purplish color.
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The size of the shell attains 4 mm. The small, solid shell has a short ovate-conic shape. it is imperforate or narrowly umbilicate. It is white with numerous revolving series of red or brown tessellations.
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The height of the yellowish-white shell reaches 1½ mm. The umbilicate shell has a turbinate-subdepressed shape. It is longitudinally and subobliquely striatulate. The short spire is obtuse; The spire consists of 3-3½ whorls.
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The shell grows to a length of 24 mm. The umbilicate, conical shell is solid. It is whitish, and maculated with purplish or yellowish. The six whorls are bicarinate at the periphery, all over spirally lirate.
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The height of the shell attains 1.25 mm, its diameter 3.5 mm. The small white shell has a depressed suborbicular shape. It is deeply umbilicate. It contains 5 whorls, including two minute ones in the apex.
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The height of the shell attains 33 mm, its diameter 32 mm. The umbilicate, heavy, solid shell has a conic shape. It is chocolate-colored or brownish-olivaceous. The conical spire is more or less elevated.
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The size of the shell varies between 5 mm and 15 mm. The umbilicate shell has a conic-globose shape. It is maculate with white on a ground of reddish carmine. The five whorls are convex.
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The nucleus is slightly umbilicate. The postnuclear whorls are nearly smooth. They show very fine curved growth striae. The whorls are nearly straight, but slightly convex in the upper part, slightly concave near the lower suture.
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Tegula rugosa shells. The height of the shell attains 26 mm, its diameter 27 mm. Some are larger with a height of 50 mm. The solid, heavy shell is narrowly umbilicate and has a conoidal shape.
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The size of the shell varies between 6 mm and 9 mm. The umbilicate shell has an orbiculate-conoidal shape. It is gray with almost round spots. It is sulcatei in a crosswise direction and longitudinally substriate.
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T. fasciata is slightly smaller than T. lividomaculata, which is high, and somewhat wider than that. Its thick, solid shell is depressed and is umbilicate. The six whorls are smooth, convex and rounded. The apex is acute.
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The white shell is small, globose and umbilicate. It is rather thin and shining. It is concentrically irregularly ribbed. The interstices are grooved, concave and transversely very faintly striate The ribs are spotted remotely with rose red.
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The size of the shell varies between 12 mm and 19 mm. The umbilicate, granulate shell has a conoid shape. It is white, painted with branching stripes of reddish purple. The whorls are convex, the last rounded.
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The size of the shell varies between 6 mm and 15 mm. The umbilicate, whitish shell is heliciform. It is spotted with pale reddish. The five convex whorls are separated by canaliculate sutures, all over regularly clathrate.
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The minute, narrowly umbilicate, rather solid shell has a turbinate shape. It is white and semipellucid. The spire is raised, the suture is distinct. The five whorls are rounded, the first three transversely ribbed and longitudinally striated.
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The height of the shell attains 35 mm, its diameter 44 mm. The solid, heavy shell is depressed, broadly umbilicate, and has a conoidal shape. It is black or purplish. The spire is more or less depressed.
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The size of the shell attains 2 mm. The broadly umbilicate, smooth shell has an orbicular-conical shape. Its color is brown, closely painted with longitudinal undulating lines. The planulate whorls are angulate above, the body whorl biangulate.
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The base of the shell is nearly plane, obsoletely cingulate and false- umbilicate. The funnel-shaped pit occupying the place of the umbilicus has a slightly elevated liration. The aperture is rhomboidal. The entirely simple columella is very oblique.
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The height of the shell attains 1 mm and its diameter 2 mm. It is a very minute, deeply umbilicate, white shell with a depressed discoidal shape. The shell contains four whorls. The two apical whorls are very small.
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The size of the shell varies between 3. mm and 11 mm. The umbilicate, thin shell has a depressed- conoidal shape. It is flesh-colored, with paler at periphery and below the suture, fading into corneous around the umbilicus.
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The height of the shell varies between 12 mm and 18 mm. The umbilicate shell has a conical shape. It is dull grayish, olivaceous or pinkish, longitudinally lineolate with a darker shade, frequently appearing unicolored. The spire is conic.
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The umbilicate, reddish yellow shell has an ovate-conoid, trochiform shape. It is thick, slightly elevated, and below subdepressed. The spire is obtuse. It contains 5-6 slightly convex whorls that are longitudinally and obliquely striate, spirally granose-lirate.
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The height of the shell attains 4 mm, its diameter 9 mm. The solid shell has a depressed conical shape and is deeply umbilicate. It contains six whorls. The oblique aperture is almost round and has a thin lip.
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The size of the shell varies between 20 mm and 40 mm. It is one of the largest species of Clanculus. The large shell has a depressed conoid shape. It is excavated and false-umbilicate in the center beneath.
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The size of the shell varies between 18 mm and 40 mm. The solid, false-umbilicate shell has an elate-conic shape. The spire has nearly rectilinear outlines. The about 9 whorls are planulate, the body whorl is carinated.
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The size of the shell varies between 18 mm and 20 mm. The large, very solid shell is deeply and rather widely false-umbilicate. It has a globose-conic shape. The spire is obtuse and contains about six whorls.
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The pseudo-umbilicate shell has a conoid shape. It is white with green radial bands. It can also be yellow or gray with irregular black stripes running down the shell. It is decorated with unequal subgranose cinguli (spiral ornamentations).
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The small, thick, white shell has a discoid shape and is deeply umbilicate. It contains 3½ convex whorls with concentric, grooved furrows. The last whorls has a rounded shape at the periphery. The umbilicus is of a moderate size.
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The size of the shell varies between 5 mm and 21 mm. The solid, umbilicate shell has a globose-conic shape. Its color is black, brown, or grayish-pink, either unicolored or tessellated with dark spots. The conic spire is short.
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The size of the shell varies between 9 mm and 19 mm. The solid, umbilicate or perforate shell has a conical shape. It is whitish, radiately maculated above and dotted beneath with red or rich brown. There are several color mutations.
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The size of the shell varies between 4 mm and 11 mm. The small, umbilicate shell has a conical shape. It is whitish, irregularly maculated with reddish brown or purplish above, dotted beneath. The six whorls are turreted and very convex.
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The length of the shell varies between 3.5 mm and 5.5 mm. The wide and deeply umbilicate shell has a depressed-conical shape. The color is highly variable. The spire is gradate, with five whorls with a dense spiral sculpture.
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The height of an adult shell attains 35 mm, its diameter 40 mm. The thick, umbilicate shell has a conic-pyramidal shape. It is radiate with white and rose color. it contains 9 whorls, the embryonic smooth, the following planulate.
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The length of the shell varies between 35 mm and 110 mm. The large, solid, umbilicate shell has an orbiculate, conic shape. It is whitish, mottled and strigate with dark brown. This species varies much in degree of elevation and carination.
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The base of the shell is convex, spirally granulate-ribbed, and narrowly umbilicate. The aperture is subrotund. The outer lip is regularly arched, its edge rather obtuse, and sulcate inside. The columella is straight, obliquely sloping, with a small tooth below.
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The length of the shell varies between 50 mm and 100 mm. The large, solid, umbilicate shell has a turbinate shape. Its color pattern is white, sometimes sparsely maculate with chestnut. The six whorls are striate, spirally lirate, and bicarinate.
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The periphery of the body whorl is well rounded. The base of the shell is well rounded, very broadly and openly umbilicate to the very apex, marked like the upper surface. The suboval aperture is oblique. The outer lip is thin.
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The height of the shell varies between 28–39 mm, its diameter between 34–42 mm. The rather thin, umbilicate shell has a strictly conical shape. It is light olivaceous or pale corneous. The spire is conical, with nearly straight outlines.
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The height of the shell attains 5 mm, its diameter also 5 mm. The grayish white shell has a conical-turbinate shape and is deeply umbilicate. It has a high spire. It is stained with spots in flames that are generally longitudinally arranged.
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The height of the shell attains 2½ mm, its diameter also 2½ mm. The minute, umbilicate shell has an orbiculate-conoid shape. Under a lens it is longitudinally striate. It is shining, whitish, painted with oblique chestnut streaks, and spotted with brown.
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The size of the shell varies between 13 mm and 32 mm. The oblique, umbilicate shell has a depressed- conical shape. The shell is cream-colored, with the tint of a blush rose. The seven whorls are planate, very smooth in the middle.
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The size of the shell varies between 15 mm and 25 mm. The very solid shell has a conical shape. It is, rather depressed, angulate at the periphery and deeply umbilicate. Its color is whitish, painted with hbroad radiating purplish brown stripes above.
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Shells of species within this genus can reach a size of about . They have the appearance of a smooth conical shell. The outer edges of the coiled whorls are quite flattened, with prominent axial sculpture . Below widely it is umbilicate and concave.
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The size of an adult shell varies between 15 mm and 35 mm. The umbilicate shell has a conoidal shape. The color is isabella-yellow. It is sculptured with very fine subgranose lirae, about 11 on penultimate whorl, 40 on the body whorl.
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The size of the shell varies between 10 mm and 20 mm. The depressed, umbilicate shell is helicoid or almost stomatia-shaped. The body whorl and aperture are very large. Its color is reddish-brown, marked with white on the spiral ribs.
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The diameter of the subdiscoidal, deeply umbilicate, white shell attains 2 mm. The spire is flat and contains three whorls. The body whorl is slightly descending and circular in section. Its upper portion is level with the periphery of the penultimate whorl.
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The height of the shell attains 15 mm, its diameter 20 mm. The umbilicate shell has a globose-conic shape. The 6 to 7 whorls are encircled by numerous unequal, grained, partly pearly riblets. The convex base is sculptured with smoother riblets, their interstices cancellated.
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The shell is thin, narrowly umbilicate, conic, shaped like Lyogyrus brownii Carpenter. The color of the shell is slightly yellowish corneous. The shell is thin, smooth, with faint growth-lines. The shell has 4 whorls that are very convex and separated by deeply constricting sutures.
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The height of the shell is up to 60 mm, and the width is up to 120 mm. The large shell has a depressed-conic shape. Below widely it is umbilicate and concave. The spire is dome-shaped, and consists of 5 convex whorls.
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The size of the shell varies between 4 mm and 10 mm. The small, narrowly umbilicate shell has an elevated conical shape. The color is whitish, variously strigate or maculated with brown, beneath white, unicolored or punctate with brown. The spire is elevated, somewhat turreted.
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The height of the shell varies between 35 mm and 40 mm, its diameter between 45 mm and 47 mm. The false-umbilicate shell has a regularly conic shape. It is concave below. Its color is greenish and roseus, under a dull grayish-green cuticle.
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The size of an adult shell varies between 7 mm and 11 mm. The broadly umbilicate shell is depressed and has a low-conoidal spire. It is thin, scarcely shining, and opaque whitish. The upper surface shows radiating maculations of purplish or olive-brown.
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The size of the shell varies between 2 mm and 5 mm. The small shell is narrowly umbilicate, depressed, and stomatella-shaped. It is whitish, zigzagly striped with red, the stripes often broken into spots, white around the umbilicus. The spire is very short.
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The height of the shell attains 15 mm. This is a very distinct little shell, with slender spire, granulose upper whorls, and a wide, rather depressed body whorl. The small, thin shell is umbilicate. It has a slender elevated spire and a broad body whorl.
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The height of the shell varies between 45 mm and 70 mm, its diameter between 45 mm and 60 mm. The solid, thick shell has a conic-pyramidal shape. Its, axis is imperforate but appears sub-umbilicate. It is white, longitudinally flammulated with bright red.
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The size of the shell varies between 6 mm and 12 mm. The small, rather solid, umbilicate shell has an elevated conical shape. It is reddish-brown or olive-brown, flammulated above with white, the base tessellated brown and white. The spire is elevated.
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The umbilicate pebblesnail, scientific name Clappia umbilicata, was a species of small freshwater snail that had an operculum, an aquatic gastropod mollusk in the family Lithoglyphidae.Thompson F. G. (1984). "North American freshwater snail genera of the hydrobiid subfamily Lithoglyphinae". Malacologia 25(1): 109-141.
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The cyrtoconoid (= approaching a conical shape but with convex sides) shell is usually perforate or umbilicate. The spire is moderately elevated. The whorls are often gibbous or tuberculose beneath the sutures, smooth or spirally ribbed. The last whorl is generally angular at the periphery.
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The size of the shell varies between 20 mm and 30 mm. The thick, solid shell has a rather straightly conical shape and is falsely umbilicate. The outlines of the nearly rectilinear spire are nearly straight with an acute apex. The shell contains about eight whorls.
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The height of the shell attains 19 mm. The solid, thick shell has a globose-conic shape. it is imperforate when adult, umbilicate in the young,. Its color is whitish or yellowish, marked longitudinally with narrow black stripes, or series of black spots on the spirals.
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The height of the shell attains 9 mm, its diameter also 9 mm. The solid shell is narrowly umbilicate and has a globose-conoida shape. It is whitish, maculated with chestnut, sometimes banded, often punctate and articulated with white dots. The conic spire is acute and short.
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The height of the shell attains 3 mm, its diameter 2½ mm. The turbinate, rather solid, red shell is umbilicate. The five whorls are sloping and angular. The first two whorls are smooth and scarcely visible, the rest ornamented with oblique lamellar minute striae and tuberculate cinguli.
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The shell grows to a length of 9 mm, its diameter 10 mm. The umbilicate shell has a depressed conical shape with a swollen base. Its color is a vivid white with green spots. It contains 6½ sharp declining whorls with longitudinal oblique striae and spiral ribs.
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The shell grows to a length of mm and a diameter of 1.1 mm. The umbilicate, white shell has a depressed globose shape. The shell contains 3-3½ whorls. The upper whorl is almost plane, the middle one is round and angulated and contains spiral, microscopic striae.
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The height of the shell varies between15 mm and 17 mm; its diameter between 14 mm and 16 mm. The thick, solid shell has a false- umbilicate shape. The outlines of the spire are nearly straight. The 6 to 7 whorls are planulate, the last often constricted.
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The size of the shell varies between 19 mm and 41 mm. The solid shell is deeply and widely umbilicate. It has a conical shape with an elevated spire. Its color is dull purplish or brown, when worn often orange, obliquely streaked with white or unicolored.
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Drawing of the animal and shell of Clanculus atropurpureus The height of the shell attains 7 mm, its diameter 9 mm. The depressed, umbilicate shell has conoid shape. It is, dark purplish or ferrugineous brown, unicolored, the apex carmine. The shell contains six convex granose-lirate whorls.
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The size of the shell varies between 10 mm and 24 mm. The solid, umbilicate or imperforate shell has a conical shape. it is whitish, painted with longitudinal stripes of red, brown or purple, the base striped, maculated or mottled. The acute spire contains 7 whorls.
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The height of the shell attains 11 mm, its diameter 12 mm. The solid, false-umbilicate, pink shell has a conical shape. Its sculpture shows rounded cinguli of unequal thickness, with rope-like markings, 5 to 6 on the penultimate whorl. Regular radiate riblets cross the cinguli.
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The size of the shell varies between 12 mm and 24 mm. The umbilicate, very solid shell has a conical shape. It is lusterless with a whitish color, unicolored or obscurely striped or maculate with brown or buff. The spire is conical with an acute apex.
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The size of the shell varies between 6 mm and 9 mm. The umbilicate shell is rather thin and has an orbicular-conoid shape. The six whorls are separated by impressed sutures. The first whorl is eroded, the following are angular, flattened above, gradate, strikingly painted, spirally lirate.
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The size of the shell varies between 9 mm and 23 mm. The umbilicate, moderately thick shell has a conoid shape. The five convex whorls are separated by canaliculate sutures. The first whorls are eroded, whitish, the rest roseus, cinereous or brownish, ornamented with a few radiating white streaks.
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The size of the shell varies between 9 mm and 20 mm. The very solid shell has an elate-conic shape. It is narrowly false-umbilicate, red or reddish brown, dotted with black; rosy at the apex. The outlines of the spire are a little concave toward the apex.
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The height of the shell reaches 5 mm and its diameter 5 mm. The small, solid shell has an ovate-round shape with 5 whorls. It is narrowly umbilicate. The two apical whorls are smooth, the antepenultimate has one keel, the penultimate two and the body whorl three keels.
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The very small shells of the species in this genus have many whorls. They are umbilicate shells that lack both shell sculpture and the apertural tooth or teeth that are characteristic in most other members of the family Pyramidellidae. They may, however, have slight biplicate folds on the columella.
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The size of the shell varies between 33 mm and 75 mm. The solid, umbilicate shell has a depressed-globose shape. It is bright green, longitudinally strigate with white under a brown epidermis. The color pattern is sometimes unicolored green, or with the white strigations broken into tessellations.
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The rather thin, acute, coeloconoid (=approaching conical shape but with concave sides) shell is imperforate or rarely umbilicate. The whorls are smooth, often polished and spirally ridged or granular. The body whorl is angulated at the periphery. The aperture is quadrangular, sinuated at the base and slightly oblique.
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Videna is a genus of terrestrial pulmonate gastropod mollusks in the family Trochomorphidae. Members of this genus are found in Southeast Asia from India into South Korea, China, and into the Pacific islands. Videna have large, umbilicate, planispiral shells with the body of the snail visible through the shell.
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Marstonia comalensis is a species of minute freshwater snail with a gill and an operculum, an aquatic gastropod mollusk or micromollusk in the family Hydrobiidae. It is found in south central Texas, United States. Marstonia comalensis is large for this genus. It has an ovate-conic, openly umbilicate shell.
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The height of the shell is 30 mm, its diameter 33 mm. The solid, umbilicate shell has a conical shape with an acutely angled periphery. It is dark purplish or brownish-purple and obliquely striate; the base radiately striate or streaked with white. The elevated spire is strictly conical.
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The cap is convex or umbilicate when young, soon funnel- shaped. Pale when moist, with a weakly translucent and striped margin, almost white when dry, it grows up to 5 cm in diameter. The gills are dirty white, crowded and a little decurrent. The spores are also white.
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The fruit body is composed of numerous (sometimes several hundred) caps. They are 1–4 cm in diameter, deeply umbilicate, light brown, and form the extremities of a strong, many branched stalk. The compound fungus can be up to 40 cm in diameter. The pores are narrow and white.
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The size of an adult shell varies between 10 mm and 25 mm. The conical shell is umbilicate. Its color is cinereous, reddish, or purplish-brown, obscurely clouded, dotted or flamed with white The conical spire is acuminate. There are about seven whorls, slightly convex, spirally striate, microscopically obliquely striate.
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The size of the shell varies between 8 mm and 13 mm. The thin, small, umbilicate shell has a conical shape. The coloration is very variable, sometimes uniform dark brown or red, sometimes cinereous, longitudinally clouded with brown, or with spiral series of blackish dots. The low-conic spire is gradate.
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The spiral, heliciform shells of these snails are flattened in shape with a very low spire. The shell is perforate or umbilicate. The lip of the aperture is simple, lacking thickened margin. These shells are more or less transparent as if made of glass, hence the popular name "glass snails".
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The height of the shell attains 6 mm, its diameter 10 mm. The shell is much more depressed than Tegula fasciata and has a discoidal shape. It is widely umbilicate. The surface is sculptured by numerous spiral slightly elevated lirulae, which are red, more or less articulated with white dots.
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The size of the shell varies between 13 mm and 30 mm. The solid, umbilicate shell has a conoida shape. Its color is whitish-grayish or greenish, radiately striped above with crimson or rich brown, beneath spotted or radiately striped with the same color. The short spire is rather obtuse.
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The height of the shell attains 12 mm. The umbilicate shell has a conoidal shape. It is isabella-colored and sculptured with very fine spiral lirae, about 11 on the penultimate whorl, 40 on the last whorl. They are on the upper whorls distinctly granulose, on the last almost entirely smooth.
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The height of the shell attains 3.15 mm, its diameter 3.75 mm. The small, rather thin shell has a depressedly conical shape and is widely umbilicate. Its colour is grey, turning to pink on the body whorl, a few scattered crimson dots on the larger ribs. The shell contains 4½ whorls.
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The shell is openly umbilicate (the umbilicus about one-fourth the total diameter), of a uniform pale brown tint, discoidal. The spire is convex but low. Suture is deeply impressed. The shell has 3 ½ whorls, that are convex, slowly increasing, the embryonic 1 ½ densely striate spirally, the rest radially costellate.
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The shell of Cravenoceras is thickly discoidal to globose and moderately to widely umbilicate. Young stages are mostly extremely evolute. Sculpture consists of transverse lamellae, which are more or less straight on the flanks, but form a shallow ventral sinus. Longitudinal lirae mostly absent or very faint, sometimes restricted to umbilical shoulder.
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The size of the adult shell of this species varies between 10 mm and 30 mm. The rather thin, false-umbilicate shell has a wide-conical shape. It is, dark green, the upper surface irregularly broadly maculate with crimson or purplish red. The ribs of the base are articulated with the same.
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The height of the shell attains 19 mm, its diameter 22 mm. The thick, false- umbilicate shell has a conoid shape with an acute apex. It contains eight whorls, the first yellowish, the following planulate, greenish, ornamented with flexuous brown lines. They are separated by a slightly impressed suture and spirally cingulate.
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The size of the shell varies between 13 mm and 25 mm. The very strong and solid shell has a depressed conoidal shape with a rounded periphery and a profoundly umbilicate axis. It is densely granulate. The overall coloration of the whorls and the spire is dark strawberry red or coral red.
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The height of the shell attains 14 mm, its diameter mm. The umbilicate shell has a conoidal shape. It is granulate-cingulate with the cinguli unequally elevated. The smaller ones are interpolated, numbering 5 to 6 between suture and the periphery, 7 to 8 on the base of the body whorl obtusely angulated.
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The height of the shell attains 1 mm, its diameter 0.9 mm. The very small, white shell is umbilicate, turbinate, not nacreous, with a conic brownish spire. The first whorl appears to be smooth. On the second whorl fine radial folds or puckering appears below the suture, becoming coarser on the following whorl.
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The size of the shell varies between 5 mm and 13 mm. The solid, umbilicate shell has a conical shape. It is deep green, brown, pinkish or olivaceous, more or less dotted with white and a self-color, sometimes radiately flammulated with white. A tract around the umbilicus is white, tessellated with brown.
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The size of the shell varies between 7 mm and 9 mm. The rather thick, deeply umbilicate shell has an orbicular-depressed shape. The 5 to 5½ whorls are separated by profound sutures. The shells are whitish, conspicuously ornamented with flexuous rosy-brownish lines, and remote spots at the suture and periphery.
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The height of the shell attains 2 mm, its diameter 3 mm. The very fragile, umbilicate shell has a subdiscoidal shape and is delphinuliform. The depressed spire is conoidal and obtuse. The five whorls are spirally finely striate, in the middle slightly angled or subcarinate, and flattened between the carina and the suture.
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The cap is up to wide, hemispherical or convex when young becoming umbilicate or applanate with age. Its color is deep orange to reddish-orange, fading with age. The cap center is granular, dry, with indistinct grooves extending towards the margin. The gills have an arcuate to decurrent attachment to the stipe.
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Clymenoceras comes from Europe. Juvavionautilus, has a widely umbilicate, slowly expanding, evolute, perforate shell in which the flanks converge on a rounded to flattened venter so that the maximum width is just central of the umbilical shoulders. The suture includes a ventral saddle and broad lateral lobes. In some, there is a secondary ventral lobe.
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The size of the shell varies between 8 mm and 15 mm. The solid, umbilicate shell has a conical shape. Its color is a dull, lusterless yellowish white or pinkish, with flexuous radiating cinereous or violaceous stripes below the suture. tTe entire surface is finely mottled and dotted with yellowish or violaceous and white.
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The size of the shell varies between 6 mm and 10 mm. The umbilicate shell has a globose-conic shape. It is coral-red or brown, marked beneath the sutures with narrow flames of white and maculations of brown, and on the base dotted with white. But the species exhibits a considerable variation in color.
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The height of the shell attains 16 mm. The sharply conical shell is keeled and, narrowly umbilicate. The obtuse keel which ascends the spire above the suture is ornamented with close-set elongate tubercles. The granules upon the slight angulation at the middle of the whorls are somewhat larger than those above and below.
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The size of the shell varies between 25 mm and 65 mm. This is an excessively variable form. The solid, heavy shell has a conical shape and is falsely umbilicate. The spire is strictly conic, or swollen and somewhat convex below, acuminate above, or sometimes constricted around the upper part of the body whorl.
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The height of the shell attains 3 mm, its diameter 2½ mm. The narrowly, deeply umbilicate shell has a conical- turreted shape. it is thin, lusterless, whitish, with a series of obscure brownish blotches below the suture, and a chain of large brown blotches around the outer part of the base. The spire is conical.
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The size of the shell varies between 5 mm and 25 mm. It is a conical, grayish (sometimes with rose or creamy tint), deeply umbilicate shell with five evenly rounded whorls. The sculpture shows strong, distant, spiral ridges, crossed by 10 to 12 fine, raised axial threads. The thin, finely crenulate outer lip is sharp.
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The size of the shell varies between 6 mm and 11 mm. The small shell is depressed and umbilicate. It is pinkish brown, gray or yellow, the ribs articulated with dots of black and white, often forming radiating lines above, zigzag beneath, where yellow replaces pink in the ground-color. The spire is low-conic.
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The shell grows to a length of 10 mm, its diameter 8 mm. The small, rather thin, narrowly umbilicate shell has a globose-conical shape. It is lusterless, olive colored, with scattered white dots, and obliquely radiating brown flames below the sutures, the spiral ribs with minute brown dots. The acute spire is conical,.
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The length of the shell of this species attains 3.25 mm, its diameter 2 mm. (Original description) The umbilicate shell is tumid, ovate and constricted at the ends. It hasa pale lemon colour, with two irregular narrow greenish bands especially noticeable on the ventral surface. It is smooth, polished except at the ends where it is spirally grooved.
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It is rather widely umbilicate. The 5½ convex whorls are separated by a narrowly canaliculate suture, and encircled by granose lirae, about 7 on the penultimate whorl . The body whorl has a roundly angulated periphery and is encircled by about 14 granulose lirae. The white umbilicus is surrounded by a white granuliferous rib, and with a smooth rib within.
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The height of the shell varies between 33 mm and 35 mm, its diameter between 37 mm and 40 mm. The rather thin and inflated shell has a conical shape and is false-umbilicate. The apex is acute. The about 7 whorls are somewhat concave and generally traversed by several conspicuously granose lirae in the middle.
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The height of the shell attains 12 mm, its diameter 10½ mm. The narrowly umbilicate shell has a conical shape. Its color is maroon or deep brown, with longitudinal undulating flames of white, continuous or interrupted into spots on the base. The elevated spire is conoidal and contains 6 to 7convex whorls, traversed by numerous spiral striae.
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The length of the shell varies between 4 mm and 10 mm. The umbilicate shell has a sublenticular shape and is obtusely angulated. It is smooth, shining, grayish-straw colored, above with little pale greenish-brown angular lines often confluent into wider streaks, below painted with white spots. The spire is a little prominent and contains five whorls.
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The size of the shell varies between 13 mm and 20 mm. The depressed, umbilicate shell has a conoidal shape. It is carinate at its periphery. Its color is whitish or yellowish, maculated with brown, generally with a series of blotches at the periphery and beneath the suture, the intervening space unicolored or more or less tessellated.
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The height of the shell attains 14 mm, its diameter 16 mm. The solid, umbilicate shell has a conoidal shape. It is lusterless, white with a series of red spots below the sutures, another beneath the periphery, and more or less closely red-dotted over the whole shell. The acute spire is conical, acute, somewhat scalariform.
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The size of the shell attains 17 mm. The umbilicate, rather thin shell has a conical shape. It is crimson or purplish red, obscurely, rather finely mottled with arrow-shaped whitish dots, usually with several narrow articulated lines on the base, and in the middle of the upper surface of the body whorl. The yellow, apical whorls are eroded.
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The shell grows to a length of 13 mm. The solid, pyramidally conical shell is deeply but narrowly umbilicate. The seven whorls are all, with the exception of the two apical which are smooth and glossy, closely spirally seven-ribbed. These ribs are thickly and regularly formed of gemmae (buds or bud-like growth), contiguous and crowded.
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The size of the shell varies between 10 mm and 16 mm. The shell is more depressed than Gibbula cineraria, and (although the base is flatter) never inclined to a pyramidal form. The spiral ridges are sharper and fewer, especially in the young. The present species is usually more widely umbilicate and broader than Gibbula cineraria.
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The height of the shell attains 1 mm, its diameter 1.7 mm. This thin, white, translucent shell has a discoidal shape and is widely umbilicate. The flat spire consists of 4 whorls, including the 2 narrow, smooth, convex whorls of the slightly raised protoconch. The shell is ornamented with many radial riblets and intercostal spiral striae.
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The height of this minute shell attains 0.75 mm and its diameter 0.50 mm. The delicate, white-gray shell has a depressed trochoidal shape and is deeply umbilicate. it contains 4 whorls. The nuclear whorls are slightly nepionic, and shapelessly turgid, but the penultimate and body whorl are very well sculptured and defined, being acutely spirally bicarinate.
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The shell of an adult varies between 3.5 mm and 10 mm. The shell is more depressed than Ethminolia vitiliginea (Menke, 1843). It is thin, shining and widely umbilicate. Its color patternis densely and finely radially vermiculate with olivaceous on a pale ground above, usually with few or many radial dark clouds below the suture, and several narrow articulated, spaced spiral lines.
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The height of the shell attains 11 mm, its diameter 14 mm. The umbilicate shell has a depressed-globose conic shape. It is, polished, shining, blackish, olive or purplish brown, unicolored, dotted or tessellated with white, often with short flames of white beneath the sutures and always more or less marked with white around the umbilicus . The spire is conical.
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The thick, rather solid, trochoidal shell has a moderately elevated spire and is false-umbilicate. Its length varies between 17 mm and 40 mm. The color of the shell is yellowish whitish, tinged with green, and radiately striped with broad or narrow uninterrupted, axial, crimson flames. The base of the shell is white or pink, radiately marked or minutely speckled with red.
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The height of the shell varies between 20 mm and 26 mm, its diameter measures 25 mm. The solid, thick shell has a conical shape carinated with nearly straight sides and is false-umbilicate. This species is more strictly conical than usual in Clanculus. It has a reddish or yellowish-brown color, more or less dotted minutely with a slightly darker shade.
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The ribs are slightly constricted just below the summit, which gives them a beaded appearance. The intercostal spaces are about twice as wide as the ribs, crossed by two closely placed, raised spiral threads, the anterior one of which marks the angulation of the periphery. The junction of ribs and the spiral threads is subnodulose. The base of the shell is moderately long, narrowly umbilicate.
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The shell is trochiform, dome-shaped or discoidal and umbilicate. The shell has from 4½ to 6 slowly enlarging whorls. The aperture is small, oblique, with armature of 2 or 3 parietal lamellae and several deeply placed basal folds, all growing continuously from an early neanic stage. The peristome is more or less thickened and expanded, the ends of the lip remote, joined by a parietal callus.
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The size of the shell varies between 12 mm and 24 mm. The solid, globose-conoid shell is umbilicate or subimperforate. It resemblies a young Phorcus articulatus. Its color is usually grayish-yellow, yellow or flesh-tinted, more or less obviously marked with obliquely radiating lines or maculations of dull crimson, sometimes broken into tessellations, sometimes faintly, minutely articulated with reddish, appearing nearly unicolored.
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The height of the shell varies between 10 mm and 12 mm, its diameter between 12 mm and 15 mm. The very solid, deeply, narrowly false- umbilicate shell has a globose-conic shape. It is fawn colored, lighter beneath and roseate at the apex. The shell is sharply granose-lirate, usually with every second rib articulated with dots of white or black or both.
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The height of the shell varies between 8 and 9 mm, its diameter between 11 and 12 mm. The low conical, deeply umbilicate shell is subcarinate at the periphery. The carina is evanescent toward the termination of the body whorl. Its color is light brown or grayish, striped with rich brown, the markings somewhat interrupted around the middle of the upper surface of the body whorl.
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The shell of an adult Gibbula ardens can be as large as . The solid, umbilicate shell has a depressed conic shape with a variable sculpture. Its color is quite variable, but usually is reddish or olive brown, with a subsutural series of short white flammules, a row of white spots on the periphery, the remainder of the surface sparsely punctate with white. The spire is acute.
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Acanthoclymeniidae is a family of early, primitive, clymeniid ammonoid cephalopods that lived during the Late Devonian. At one time this family was known to contain a single genus, Acanthoclymenia, named by Hyatt in 1900, which is its type. Acanthoclymeniidae are characterized by their small slightly involute, subdiscoidal, widely umbilicate shells that reach only a few centimeters in diameter. This description applies to the genus Acanthoclymenia as well.
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The size of the shell varies between 4 mm and 8 mm. The small, narrowly umbilicate shell has a conical shape. It is excessively variable in coloration, the following patterns are most usual: (1) whitish with longitudinal broad or narrow red or crimson flames reaching to the periphery, the ground-color and base dotted with red. The flames are frequently interrupted in the middle by a dotted zone.
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The height of the shell attains 9 mm, its diameter 12 mm. A pale brownish-pink-coloured Clanculus, with obscure pink spotting basally. It is depressedly conical, narrowly umbilicate, the umbilical region coarsely crenate. It is six- or seven- whorled, the three lowest whorls possessing, firstly, three rows of close spiral fine granules followed by others which have a fine spiral line dividing them, the interstices being very finely obliquely striate.
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The size of the shell varies between 6 mm and 10 mm. The narrowly umbilicate shell has a globose- conic shape with a conic spire and an acute apex. It is pinkish, dark brown, blackish or pink, radiately maculated with white below the sutures, and dotted with white around the center of the base. The 5 to 6 whorls are convex and separated by canaliculate sutures, and spirally granose-lirate.
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The thin, umbilicate shell has a conical shape. It is ashen, whitish or reddish in color. The surface is lusterless, the dull outer layer very thin, overlying a brilliantly iridescent nacre. The sculpture consists of a rather prominent spiral ridge or carina at the shoulder of each whorl, beneath which, on the peripheral portion of the whorl, there are several (generally 3 to 6) smaller lirae, often subobsolete.
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The shell grows to a length of 5 mm, its diameter 9 mm. The shell is much depressed, biconvex, obtusely carinate peripherally and openly umbilicate. Its color is flesh- tinted, with a band below the suture composed of fine obliquely radial dark red lines alternating with white ones. This is followed in the middle of the upper surface by a spiral series of oblique, oblong red blotches alternating with opaque white ones.
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The cap is fleshy and firm, initially convex and umbilicate (with a central depression like a navel), then flattened before becoming funnel-shaped in maturity. Reaching diameters of , caps are a sulfur-yellow color, with faint zones of narrow concentric rings of lighter and darker yellow tones. The cap is very sticky when wet, and has a thick and persisting gluten. The margin (edge of the cap) is rolled inward and has minute hairs in young specimens.
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The height of the shell attains 10 mm. The solid, umbilicate shell has a conical shape and is pointed at the apex, slightly angled on the shoulder, rounded at the periphery and flattened on the base. It contains seven whorls. The colour, on the last three whorls, consists of oblique and zigzag brick-red stripes extending from suture to the periphery Between these as well as on the apex and base, the shell is pale cream.
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Benthic gastropods were heavily preyed upon throughout the MMR, the weaker shelled types being pushed out of the benthic zone into more isolated habitats. The Palaeozoic archaeogastropods were subsequently replaced by neritaceans, mesogastropods and neogastropods. The former typically have symmetrical, umbilicate shells that are mechanically weaker than the latter. These lack an umbilicus and also developed the ability to modify the interior of their shells, allowing them to develop sculptures on their exterior to act as defence against predators.
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Euomphaloid shells are mostly discoidal and may be either orthostrophic (coils wrapped around an erect cone) or hyperstrophic (coils wrapped around an inverted cone); are widely umbilicate and commonly have a channel, presumed exhalent, within the angulation in the outer part of the upper whorl surface. The shell wall is relatively thick, with an external prismatic layer of calcite, which may be pigmented, and an internal layer of lamellar, but not nacreous, aragonite.(1960). Treatise on Invertebrate Paleontology. Part I, Gastropoda.
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The small, conoidal shell has a tumid conical base. It is bluntly bicarinate and umbilicate with a resinous luster. Its sculpture shows very many irregular oblique faint lines of growth, with a few remote rounded spirals, which are very weak above, stronger on the base, and of which two at the periphery form a feeble double carina. The color of the shell is: a pale transparent resinous brown, flecked below the sutures and, at the periphery with alternate spots of white and crimson.
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The size of the shell varies between 12 mm and 18 mm. The thick, narrowly umbilicate, rarely imperforate shell has a conical, thick shape. It is cinereous, densely marked with numerous narrow longitudinal brown or reddish lines, or broader stripes. The 6 whorls are flattened, with 7 or 8 thread-like spiral ridges on the upper surface of the body whorl, with often one or two finer striae between each ridge, and about a dozen fine ridge-like striae on the under side.
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Red form The size of the shell varies between 12 mm and 17 mm. The umbilicate, thin shell has a depressed- conoidal shape. It is sharply transversely lirate with narrow, elevated, sharp lirae, of which three are stronger, alternating with two or three smaller ones; about 12 similar ones are on the base; all of them are crossed and made subgranose by closely crowded growth lines. Its surface is white, painted with scattered red dots and a few larger red spots.
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Abathomphalus is a genus of foraminifera included in the Globotruncanid family. Abathomphalus was described and recorded in 1957 by Bolli, Loeblich, and Tappan and distinguished from related general by the "extra-umbilical position of the primary aperture and in the radial sutures on the umbilical side." The test forms a low to flat umbilicate trochospiral, with four to five petaloid chambers per whorl. Sutures are curved and oblique, the periphery angular to truncate, bearing two variously spaced keels bordered by an imperforate band.
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In France their fossils are found in well bedded pelagic (deep ocean) limy mudstones, Frasnian in age, with a paleolatatude of about 32° south. Current latitude is 43.4° N. In Western Australia, in Canning Basin, they are found in Frasnian and Famennian, (Upper Devonian), marginal slope and basinal facies related to reef complexes. Paleolatitudes are about 20° S. Current latitude is 18.0° S. Shells of the type genus Aulatornoceras are involute, widely to narrowly umbilicate, with strongly biconvex growth lines. The suture is goniatitic.
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The truffles are brown to grayish-brown in color, measure in diameter, and usually have an umbilicate (navel-shaped) depression at the base. The peridium (outer skin) is 150–200 μm thick and comprises two distinct layers of tissue. The outer tissue layer, 50–100 μm thick, is made of somewhat angular to roughly spherical light brown cells that are typically 7.5–15 wide. The inner layer (100–150 μm thick) is a type of tissue known as a textura intricata, consisting of irregularly interwoven hyphae.
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The length of the shell varies between 15 mm and 25 mm. The solid shell has a conical shape with nearly straight outlines and is false- umbilicate. The sculpture of the upper surface consists of 5 series to each whorl of rounded bead-like granules, between which are visible numerous very minute spiral striae, in the interstices of which oblique incremental striae are prominently shown under a lens. The base of the shell is concentrically striate with unequal striae that disappear toward the outer edge.
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Shells medium-sized to large (diameter of base without attachments 65–128 mm; height of shell 48–70 mm), rather depressed to moderately high-spired, widely umbilicate, with wide peripheral flange (30-40% of total diameter at base) which is simple in some species or is digitate or divided into numerous long, hollow, narrow, parallel-sided spines. Ventral side of peripheral flange non-porcellanous. Foreign objects usually small to very small covering less than 30% of dorsal surface.Kreipl, K. & Alf, A. (1999): Recent Xenophoridae.
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The height of the shell attains 6 mm. The solid, umbilicate shell has a globose-conical shape. It is lusterless or slightly shining, purplish, unicolored, or with large radiating white patches above, or around the periphery, or spiral darker lines, or spiral articulated lines. Surface either with (1st) a few (2-4) strong lirae above, their interspaces smooth, the base with about 8 concentric lirulae, or (2d) more numerous narrow irregular lirulae above, those of the base still smaller, or (3d) the spiral sculpture obsolete, surface smooth or nearly so above and beneath.
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Before the last half whorl is formed, the shell is umbilicate, and judging by the growth-lines, the juvenile and subadult shell is carried with the equatorial plane nearly vertical. However, as the last half whorl starts to form, the direction of growth changes: it tilts to the right, not to the left as in the Helicidae, and subsequently that half whorl grows up across the base of the shell. The final aperture in the adult is slightly above the keel or widest diameter of the shell. aperture of an adult shell of Anostoma.
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The vertical growth or elevation of the colony, another identifying characteristic, is assessed by tilting the agar plate to the side and is denoted as flat, raised, convex, pulvinate (very convex), umbilicate (having a depression in the centre) or umbonate (having a bump in the centre). The edge of the colony may be separately described using terms like smooth, rough, irregular and filamentous. Bacillus anthracis is notable for its filamentous appearance, which is sometimes described as resembling Medusa's head. Consistency is examined by physically manipulating the colony with a sterile instrument.
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The roughly elliptical spores are initially hyaline, but become brown to yellowish-brown in age. They measure 25–37.5 by 20–25 and feature a mesh-like surface ornamentation with ridges up to 2.5–3 μm high. Tuber polyspermum very closely resembles the North American species T. lyonii in both macro- and microscopic characteristics; the only differences noted by the authors were the umbilicate depression and the darker gleba of T. polyspermum. These difference alone would not have been enough to justify creating a new species, but the molecular analysis revealed that the North American and Chinese species were clearly distinct.
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Its caps are umbilicate (with a navel-like cavity), sometimes with a hole in the center of the cap, unlike the flattened or slightly depressed caps of H. repandum. Microscopically, H. umbilicatum has spores that are larger and more elliptical than those of H. repandum, measuring 7.5–9 by 6–7.5 µm. A European lookalike, Hydnum rufescens, is also smaller than H. repandum, and has a deeper apricot to orange color. Hydnum ellipsosporum, described as a new species from Germany in 2004, differs from H. repandum by the shape and length of its spores, which are ellipsoid and measure 9–11 by 6–7.5 µm.
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Xenophorids are unusual in that in many of the species the animal cements small stones or shells to the edge of the shell as it grows, thus the shells of those species are sometimes humorously referred to as "shell-collecting shells". The genus name Xenophora comes from two ancient Greek words and means "bearing (or carrying) foreigners". The shells are small to rather large (diameter of base without attachments 19–160 mm; height of shell 21–100 mm), depressed to conical, with narrow to wide, simple to spinose peripheral edge or flange separating spire from base. Aperture large, base broad, rather flattened, often umbilicate.
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