Human-sized external ears were implanted under the skin of mice.
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So if someone loses one or both external ears, they're going to have a mild hearing loss and a harder time localizing high frequency sounds.
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"We were able to successfully design, fabricate, and regenerate patient-specific external ears," the researchers wrote in their study, which followed each child for up to 2½ years.
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External ears are absent. The skull is elongate compared to other Trogonophidae. The body is wormlike: legless, elongate, cylindrical, and annulated. There are sunken lateral lines.
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Though the hearing organs are poorly developed and primitive with no visible external ears, they can still show a frequency response from 100 to 800 Hz, with peak sensitivity of 40 dB at 200 Hz.
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They are usually black or pied, occasionally individuals will be gray or tan. Rams are horned and ewes are polled (hornless). Individuals often lack external ears. The rams are selected for size, horn size, and for fighting ability.
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Phocids are more specialized for aquatic life than otariids. They lack external ears and have sleek, streamlined bodies. Retractable nipples, internal testicles, and an internal penile sheath provide further streamlining. A smooth layer of blubber lies underneath the skin.
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Some are arboreal, with long balancing tails and other adaptations for climbing, while others are semiaquatic, with webbed feet and small external ears. Yet others are burrowing animals, or ground-dwellers.Eisenberg et al. (1984) Their diets are similarly variable, with herbivorous, omnivorous, and insectivorous species all being known.
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The tongue is attached in the lower cavity, near the pelvis and the last pair of ribs, and is able to retract and rest in the chest cavity. Pangolins have no external ears, so have poor hearing, as well as poor vision, although they do have a strong sense of smell.
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Also like phocids, it lacks external ears. The extraocular muscles of the walrus are well-developed. This and its lack of orbital roof allow it to protrude its eyes and see in both a frontal and dorsal direction. However, vision in this species appears to be more suited for short-range.
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By contrast, desmans have webbed paws with a fringe of stiff fur to aid in swimming. Moles generally have short tails, but those of desmans are elongated and flattened. All species have small eyes and poor eyesight, but only a few are truly blind. The external ears are very small or absent.
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It appears that one of the first important evolutionary splits in muroid rodents is between burrowing forms and nonburrowing forms. Unlike the other spalacids, which primarily use their incisors, zokors use their powerful front claws for digging. They have small eyes and no external ears. Zokors feed on plant matter such as tubers and seeds.
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The mouth was large and round and open. It > had no external nose, but two holes where the nose should have been. The > eyes appeared to be lumps of coagulated blood, turned out, about the bigness > of a plum, ghastly to behold. It had no external ears, but holes where the > ears should be.
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The Zaisan mole vole is highly adapted to life underground. It grows to a head and body length of with a short tail long and weighs between . The coat is dense, soft and velvety. The face and the crown of the head are dark brown and the external ears are reduced to a fleshy ridge.
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The overall length of adults is and weight is from making them the same length as the northern walrus but usually less than half the weight.Leopard Seals, Hydrurga leptonyx. marinebio.org The whiskers are short and clear. As "true" seals, they do not have external ears or pinnae, but possess an internal ear canal that leads to an external opening.
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Great horned owl perched on the top of a Joshua tree at evening twilight in the Mojave Desert USA. Owls exhibit specialized hearing functions and ear shapes that also aid in hunting. They are noted for asymmetrical ear placements on the skull in some genera. Owls can have either internal or external ears, both of which are asymmetrical.
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It has small eyes and external ears. Its fur consists of a dense undercoat and coarse guard hairs. It possesses counter-shading with dark brown on its back and whitish or yellowish under parts. The tail is covered with a short, silky coat of fur and is compressed laterally which allow it to swim by horizontal undulations as in fishes and crocodiles.
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Kay launched Moosh Walks, a media and retail brand that aims to empower young girls through storytelling, primarily about leadership. In 2014, Kay released her first characters as a line of 3D socks. The knee high socks feature numerous character designs and external ears. Kay said she created socks with ears because she didn't want to be another YouTuber with a logo on a T-shirt.
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Attacks of skin redness and burning sensation or pain in one or both external ears are the only common symptoms. Pain is often most pronounced at the ear lobe, and sometimes radiates to the jawbone and cheek. The pain is normally mild, but has occasionally been described as severe. The attacks can last seconds or hours, with 30 minutes to an hour being typical.
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Dibamidae or blind skinks is a family of lizards characterized by their elongated cylindrical body and an apparent lack of limbs. Female dibamids are entirely limbless and the males retain small flap-like hind limbs, which they use to grip their partner during mating. They have a rigidly fused skull, lack pterygoid teeth and external ears. Their eyes are greatly reduced, and covered with a scale.
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Calomys cerqueirai is a relatively small member of the Sigmodontinae, but is large for a Calomys. The upperparts are yellowish brown, becoming lighter towards the sides; this coloration is sharply delineated from the whitish underparts. The external ears (pinnae) are small and rounded and have a patch of white hair behind them. The tail, which is dark above and white below, is relatively short.
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The Kihansi spray toad is a small, sexually dimorphic anuran, with females reaching up to long and males up to . The toads display yellow skin coloration with brownish dorsolateral striping. They have webbed toes on their hind legs, but lack expanded toe tips. They lack external ears, but do possess normal anuran inner ear features, with the exception of tympanic membranes and air-filled middle ear cavities.
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A six year old moose undergoing domestication at Kostroma Moose Farm In moose, antlers may act as large hearing aids. Equipped with large, highly adjustable external ears, moose have highly sensitive hearing. Moose with antlers have more sensitive hearing than moose without, and a study of trophy antlers with an artificial ear confirmed that the large flattened (palmate) antler behaves like a parabolic reflector.
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They are dark brown on the upper side and tan underneath. The tail is shorter and less bushy than in other ground squirrels, and the external ears are so short as to look more like holes in the animal's head. Behavior is more like that of a prairie dog than a typical ground squirrel. The tail is constantly trembling, so the animal is sometimes called the "flickertail".
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In Venezuela Skull Pale-throated sloths have a rounded head with a blunt nose and small external ears. The limbs are long and weak, with the arms being nearly twice the length of the hindlimbs. The hands and feet each have three digits, armed with long, arched claws, with the middle claw being the largest and most powerful. Males are in head-body length, with a short, , tail, and weigh from .
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According to this hypothesis, features such as the transparent, fused eyelids (brille) and loss of external ears evolved to cope with fossorial difficulties, such as scratched corneas and dirt in the ears. Some primitive snakes are known to have possessed hindlimbs, but their pelvic bones lacked a direct connection to the vertebrae. These include fossil species like Haasiophis, Pachyrhachis and Eupodophis, which are slightly older than Najash. Fossil of Archaeophis proavus.
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Primrose syndrome is a rare, slowly progressive genetic disorder that can vary symptomatically between individual cases, but is generally characterised by ossification of the external ears, learning difficulties, and facial abnormalities. It was first described in 1982 in Scotland's Royal National Larbert Institution by Dr D.A.A. Primrose. Primrose syndrome appears to occur spontaneously, regardless of family history. The cause is currently unknown and there are no known treatments.
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They are most highly developed in the blind mole-rats, whose eyes are completely covered by skin, and entirely lack external ears or tails. All of the spalacid species dig extensive burrows, which may include storage chambers for food, latrine chambers, and breeding nests. They are generally solitary animals, and do not share their tunnel complexes with other individuals. All the species are herbivores, feeding on roots, bulbs, and tubers.
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At present, fairy armadillos have the least molecular data available within the armadillo family. This genus includes only 2 living species of fairy armadillo: Chlamyphorus truncatus (pink fairy armadillo) and Chlamyphorus retusus (chacoan or greater fairy armadillo). These two species are morphologically similar: both have notably reduced eyes and reinforced forearms that support enlarged digging claws. It is also one of few mammals that does not have external ears visible.
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While the marsupials continued to give birth to an underdeveloped fetus after a short pregnancy, the ancestors of placental mammals gradually evolved a prolonged pregnancy.Ancient “genomic parasites” spurred evolution of pregnancy in mammals Therian mammals no longer have the coracoid bone, contrary to their cousins, monotremes. Pinnae (external ears) are also a distinctive trait that is a therian exclusivity, though some therians, such as the earless seals, have lost them secondarily.
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The reptilian nervous system contains the same basic part of the amphibian brain, but the reptile cerebrum and cerebellum are slightly larger. Most typical sense organs are well developed with certain exceptions, most notably the snake's lack of external ears (middle and inner ears are present). There are twelve pairs of cranial nerves. Due to their short cochlea, reptiles use electrical tuning to expand their range of audible frequencies.
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There are no external ears or openings. Unusually, the sex can be determined at birth, with an external scrotum present. Tasmanian devil young are variously called "pups", "joeys", or "imps". When the young are born, competition is fierce as they move from the vagina in a sticky flow of mucus to the pouch. Once inside the pouch, they each remain attached to a nipple for the next 100 days.
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Engineers make a technical distinction between "binaural" and "stereophonic" recording. Of these, binaural recording is analogous to stereoscopic photography. In binaural recording, a pair of microphones is put inside a model of a human head that includes external ears and ear canals; each microphone is where the eardrum would be. The recording is then played back through headphones, so that each channel is presented independently, without mixing or crosstalk.
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Spalacids are mouse- to rat-sized rodents, adapted to burrowing and living underground. They have short limbs, wedge-shaped skulls, strong neck muscles, large incisor teeth, and small eyes and external ears. In the zokors, which dig primarily with their feet, rather than their teeth, the front claws are also massively enlarged. These features are least extreme in the bamboo rats, which spend at least some of their time above ground, foraging for food.
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This fur seal is a midsized pinniped with a relatively long neck and pointed muzzle compared with others in the family. The nose does not extend much past the mouth, the external ears are long, prominent, and naked at the tip. Adults have very long vibrissae, particularly males, up to 35 to 50 cm. The fore flippers are about one-third, and hind flippers slightly more than one-fourth, of the total length.
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Monosomy 9p (also known as Alfi's Syndrome or simply 9P-) is a rare chromosomal disorder in which there is deletion (monosomy) of a portion of chromosome 9. Symptoms include microgenitalia, intellectual disability with microcephaly and dysmorphic features. The location has recently been narrowed to 9p22.2-p23. Various clinical features have been associated with this disease including trigonocephaly, flattened occiput, prominent forehead, broad flat nasal bridge, anteverted nares, malformed external ears, hypertelorism, and hypertonia.
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Illustration of the habit of travelling in family parties from Edward Hamilton Aitken The house shrew has a uniform, short, dense fur of mid- grey to brownish-grey color. The tail is thick at the base and a bit narrower at the tip, and is covered with a few long, bristle-like hairs that are thinly scattered. They have short legs with five clawed toes. They have small external ears and an elongated snout.
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Therefore they are functionally blind. They have no external ears, just a pair of tiny holes hidden under thick hair. The head is cone-shaped, with a leathery shield over the muzzle, the body is tubular, and the tail is a short, bald stub encased in leathery skin. They are between long, weigh , and are uniformly covered in fairly short, very fine pale cream to white hair with an iridescent golden sheen.
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Tuco-tucos live in burrows and have a number of adaptations to suit this lifestyle. The tail is short, the eyes are small and the external ears are short, while the claws on the front feet are large and strong. The fur of the highland tuco-tuco is longer and softer than other tuco-tucos. The head is dark-coloured, the upper parts are light brown or yellowish-grey and the flanks and underparts are paler.
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Otariids have visible external ears, while phocids and walruses lack these. Pinnipeds have well-developed senses—their eyesight and hearing are adapted for both air and water, and they have an advanced tactile system in their whiskers or vibrissae. Some species are well adapted for diving to great depths. They have a layer of fat, or blubber, under the skin to keep warm in the cold water, and, other than the walrus, all species are covered in fur.
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Their onion-shaped heads are bald, save for tufts of hair at the very tops. They have no noses (Cloyd remarks that they have no sense of smell because of this) and they have no visible external ears. Cloyd displays a toothy smile; whatever mouth Gidney may have is concealed by a shaggy mustache. Cloyd wears a belt and holster for his scrootch gun (which has the power to immobilize its targets for a variable length of time).
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Surface rendering of the head of the frog Atelopus franciscus, with ear parts highlighted. Frogs can hear both in the air and below water. They do not have external ears; the eardrums (tympanic membranes) are directly exposed or may be covered by a layer of skin and are visible as a circular area just behind the eye. The size and distance apart of the eardrums is related to the frequency and wavelength at which the frog calls.
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Lemurpediculus verruculosus is an ectoparasite that is found on Microcebus rufus, a mouse lemur of southeastern Madagascar. It is a type of sucking louse that is found on the external ears of the mouse lemur due to the rich peripheral blood supply and sparse fur. The mouse lemur M. rufus is the only known host to this particular sucking louse, and infestations range from light to fairly heavy on the ears. The exact effect these lice have on the host is largely unknown.
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Eremoryzomys polius is a large, long-tailed rice rat that in color resembles some North American woodrats (Neotoma). The fur is grayish above and lighter below, where the hairs are gray at the bases but white at the tips. The external ears (pinnae) are short and the tail is dark above and light below. The hindfeet have well- developed ungual tufts (patches of hair) along the plantar margins and between all of the digits, a character shared only with Sooretamys angouya among oryzomyines.
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Females have 0+2=4 mammae (no thoracic and two inguinal pairs), the same number as most other Australasian rodents. The earless water rat and Baiyankamys are related because they share the following characters: tail much longer than head-body length; soft, thick, greyish dorsal coat; long, narrow rostrum with a narrow top; very narrow canines; very narrow mesopterygoid fossae; narrow zygomatic arches with a high squamosal root. B. habbema also has the reduced external ears of the earless water rat.
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This condition is also characterized by an unusual clubfoot with twisting of the metatarsals, inward- and upward-turning foot, tarsus varus and inversion adducted appearances. Furthermore, they classically present with scoliosis (progressive curvature of the spine) and unusually positioned thumbs (hitchhiker thumbs). About half of infants with diastrophic dysplasia are born with an opening in the roof of the mouth called a cleft palate. Swelling of the external ears is also common in newborns and can lead to thickened, deformed ears.
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Like most burrowing mammals with similar habits, the Chrysochloridae have short legs with powerful digging claws, very dense fur that repels dirt and moisture, and toughened skin, particularly on the head. Their eyes are non-functional and covered with furred skin. The external ears are just tiny openings. In particular, golden moles bear a remarkable resemblance to the marsupial moles of Australia, family Notoryctidae, which they resemble so suggestively that at one time, the marsupial/placental divide not withstanding, some argued that they were related.
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This feature makes the cat's tracks obscure and difficult to identify and follow. Its skull is arched in lateral outline with wide zygomatic arches. The pinnae of the ears are triangular, and the ear canal is very wide, giving the cat an enhanced sense of hearing. The auditory bullae and the passages from the external ears to the ear drums are greatly enlarged compared to other small wild cats; the inner parts of the ears are protected from foreign objects by long, closely spaced white hairs.
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Its weight was in excess of . Prior to 1984, most Godzilla suits were made from scratch, thus resulting in slight design changes in each film appearance. The most notable changes during the 1960s-70s were the reduction in Godzilla's number of toes and the removal of the character's external ears and prominent fangs, features which would later be reincorporated in the Godzilla designs from The Return of Godzilla (1984) onward. The most consistent Godzilla design was maintained from Godzilla vs. Biollante (1989) to Godzilla vs.
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Its grey coat, white belly, and slender physique distinguish them from their cousin, the harbor seal (Phoca vitulina). The monk seal's physique is ideal for hunting its prey: fish, lobster, octopus and squid in deep water coral beds. When it is not hunting and eating, it generally basks on the sandy beaches and volcanic rock of the Northwest Hawaiian Islands. The Hawaiian monk seal is part of the family Phocidae, being named so for its characteristic lack of external ears and inability to rotate its hind flippers under the body.
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Lizards lack external ears, having instead a circular opening in which the tympanic membrane (eardrum) can be seen. Many species rely on hearing for early warning of predators, and flee at the slightest sound. Nile monitor using its tongue for smell As in snakes and many mammals, all lizards have a specialised olfactory system, the vomeronasal organ, used to detect pheromones. Monitor lizards transfer scent from the tip of their tongue to the organ; the tongue is used only for this information- gathering purpose, and is not involved in manipulating food.
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Jean Hermann's 1800 restoration of the pterosaur Pterodactylus antiquus The beginning of the 19th century saw the first paleontological artworks with an unambiguous scientific basis, and this emergence coincided with paleontology being seen as a distinct field of science. The French naturalist and professor Jean Hermann of Strasbourg, France, drafted what Witton describes as the "oldest known, incontrovertible" pieces of paleoart in 1800.Witton (2018) p. 21. These sketches, based on the first known fossil skeleton of a pterosaur, depict Hermann's interpretation of the animal as a flying mammal with fur and large external ears.
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This is caused by the geometry and sound-transmitting characteristics of the sinus, throat cavities, eustachian tubes, inner ear, external ears and other tissues of the head and upper body. [See: Head Related Transfer Function, “HRTF”] Conventional music recording is produced for stereo playback which makes use of only Left and Right playback for speakers and headphones. The implementation of Dummy Head allows the recording artist to make use of three dimensional sound reproduction. This is because through playback via headphones the listener perceives sound as if they were in the position of the dummy.
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The turtle can retract its head and extremities inside its shell if it feels threatened. These turtles also have a complete skeletal system, with partially webbed feet that help them to swim and that can be withdrawn inside the carapace along with the head and tail. The red stripe on each side of the head distinguishes the red-eared slider from all other North American species and gives this species its name, as the stripe is located behind the eyes where their (external) ears would be. These stripes may lose their color over time.
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The Tenctonese, also known as Newcomers, are the main fictional humanoid species in the Alien Nation franchise, including the 1988 film, the subsequent television series, and spinoff media. They are from the planet Tencton, though references to numerous slave colonies throughout the series and telemovies indicate that they are widespread beyond their own planet. They are easily distinguished from humans by their hairless, spotted heads and lack of external ears. According to the show, more than a quarter of a million Tenctonese reside on Earth in the United States, mostly in the Los Angeles area.
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Because the flanks lack entirely dark cover hairs, they are slightly lighter than the rest of the upperparts. They are sharply separated in color from the underparts, which are entirely white to buffish. The mystacial vibrissae (whiskers above the mouth) are long, up to 60 mm (2.4 in), and white or black in color. The pinnae (external ears) are dark brown and covered with fine gray hairs,Goodman and Soarimalala, 2005, p. 455 and ear length is 32 mm (1.3 in). Hindfoot length is 37 mm (1.5 in).
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Like other blesmols, the Damaraland mole-rat has a cylindrical body with short, stout limbs, large feet, and a conical head. It is also similar in size to most other African mole-rats, having a head-body length of , with a short, , tail, and weighing between . There are no external ears, and the blue-coloured eyes are tiny with thick eyelids. The incisor teeth are large and prominent, with flaps of skin behind them to prevent soil from falling into the throat while the animal is using them to dig.
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Type III: Small amount of basic, soft tissue ear structure lacking cartilage; auricle is abnormal in appearance. Type IV: Most severe type, Anotia; all external structures of the ears are absent. Defects affecting the external ear such as the auricle results from malformation or suppression of the auricular hillocks, which are small swellings on the embryonic visceral arches or the beginnings of the external ears; the small swellings are derived from the first and second pharyngeal arches. Because the ears and the kidneys develop simultaneously, children with ear defects are often checked for kidney defects at birth.
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Many researchers believe that snakes share a common marine ancestry with mosasaurs, a suggestion advanced in 1869 by Edward Drinker Cope, who coined the term Pythonomorpha to unite them. The idea lay dormant for more than a century, to be revived in the 1990s. The mosasaurs were aquatic varanid lizards the from the Cretaceous—which in turn are derived from Aigialosaurids. According to this hypothesis, the fused, transparent eyelids of snakes are thought to have evolved to combat marine conditions (corneal water loss through osmosis), and the external ears were lost through disuse in an aquatic environment.
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It may have a range of up to , with a male's home range overlapping those of three or four females. The platypus is an excellent swimmer and spends much of its time in the water foraging for food. It has a very characteristic swimming style and no external ears. Uniquely among mammals, it propels itself when swimming by an alternate rowing motion of the front feet; although all four feet of the platypus are webbed, the hind feet (which are held against the body) do not assist in propulsion, but are used for steering in combination with the tail.
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Snakes lack external ears, though they do have internal ears, and respond to the movement of the flute, not the actual noise. The Wildlife Protection Act of 1972 in India technically proscribes snake charming on grounds of reducing animal cruelty. Other snake charmers also have a snake and mongoose show, where both the animals have a mock fight; however, this is not very common, as the snakes, as well as the mongooses, may be seriously injured or killed. Snake charming as a profession is dying out in India because of competition from modern forms of entertainment and environment laws proscribing the practice.
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Fur seals are any of nine species of pinnipeds belonging to the subfamily Arctocephalinae in the family Otariidae. They are much more closely related to sea lions than true seals, and share with them external ears (pinnae), relatively long and muscular foreflippers, and the ability to walk on all fours. They are marked by their dense underfur, which made them a long-time object of commercial hunting. Eight species belong to the genus Arctocephalus and are found primarily in the Southern Hemisphere, while a ninth species also sometimes called fur seal, the northern fur seal (Callorhinus ursinus), belongs to a different genus and inhabits the North Pacific.
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However, upon arriving to Thundera, they were forced to become street urchins and lock-picking pickpockets in order to survive the slums with their aspirations the only thing keeping them going. When the Lizards attack Thundera, the two manage to escape during the chaos before eventually teaming up with the ThunderCats on their journey. In this version, WilyKit and WilyKat have tails, which none of the main adult ThunderCats except Panthro possess (how Panthro lost his is never shown nor explained), and visible external ears. Like in the original series, WilyKat possesses gimmick weapons with his usual weapon being a grappling hook called a Flick.
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All species are carnivorous and most are insectivores, exceptions are bats of genera Myotis and Pizonyx that catch fish and the larger Nyctalus species known to capture small passerine birds in flight. The dentition of the family varies between species; the dental formula of the family is: They rely mainly on echolocation to navigate and obtain food, but they lack the elaborate nose appendages of microbats that focus nasal emitted ultrasound. The ultrasound signal is usually produced orally, and many species have large external ears to capture and reflect sound, enabling them to discriminate and extract information. The vespertilionids employ a range of flight techniques.
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Notoryctidae is a family of mammals, allying several extant and fossil species of Australia. The group appear to have diverged from other marsupials at an early stage and are highly specialised to foraging through loose sand, the unusual features have seen the unique family placed in the taxonomic order Notoryctemorphia Aplin & Archer, 1987. The eyes and external ears are absent in the modern species, the nose is shielded and mouth reduced in size, and they use pairs of well developed claws to move beneath the sand. The Australian animals resemble a species known as moles, a burrow building mammal found in other continents, and were collectively referred to as 'marsupial moles'.
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Most cartilage is later converted to bone, but in adulthood this tissue continues to cover and protect the ends of bones and is present in the nose and external ears. Mutations in the SLC26A2 gene alter the structure of developing cartilage, preventing bones from forming properly and resulting in the skeletal problems characteristic of diastrophic dysplasia. This condition is an autosomal recessive disorder, meaning that the defective gene is located on an autosome, and both parents must carry one copy of the defective gene in order to have a child born with the disorder. The parents of a child with an autosomal recessive disorder are usually not affected by the disorder.
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This is possible because the brain, inner ear and the external ears (pinna) work together to make inferences about location. This ability to localize sound sources may have developed in humans and ancestors as an evolutionary necessity, since the eyes can only see a fraction of the world around a viewer, and vision is hampered in darkness, while the ability to localize a sound source works in all directions, to varying accuracy, regardless of the surrounding light. Humans estimate the location of a source by taking cues derived from one ear (monaural cues), and by comparing cues received at both ears (difference cues or binaural cues). Among the difference cues are time differences of arrival and intensity differences.
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Dhauti is one of the Shatkarmas (or Shatkriyas), which form the yogic system of body cleansing techniques. It is intended mainly to the cleaning of the digestive tract in its full length but it affects also the respiratory tract, external ears and eyes. According to the 18th century Gheranda Samhita,Dhauti - Internal Cleansing, in Yoga Magazine, a publication of Bihar School of Yoga it is divided into four parts: Antara (internal) Dhauti, Danta (teeth) Dhauti, Hrida (cardiac or chest region) Dhauti and Mula Shodhana (rectal cleansing). Dhauti is one of the six Shatkarmas, purifications used in traditional hatha yoga; Vastra Dhauti, using a long cloth to clean the oesophagus and stomach, is illustrated here.
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Some organisms are fossorial to aid in temperature regulation while others use the underground habitat for protection from predators or for food storage.Damiani, R, 2003, Earliest evidence of cynodont burrowing, The Royal Society Publishing, Volume 270, Issue 1525 Fossorial mammals have a fusiform body, thickest at the shoulders and tapering off at the tail and nose. Unable to see in the dark burrows, most have degenerated eyes, but degeneration varies between species; pocket gophers, for example, are only semi-fossorial and have very small yet functional eyes, in the fully fossorial marsupial mole the eyes are degenerated and useless, talpa moles have vestigial eyes and the cape golden mole has a layer of skin covering the eyes. External ears flaps are also very small or absent.
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Hawaiian monk seal swimming (note the red eyes are due to the red-eye effect) Monk seals are part of the family Phocidae (earless seals), the members of which are characterized by their lack of external ears, the inability to rotate the hind flippers under the body, and shed their hair and the outer layer of their skin in an annual molt. Monk seals as a whole vary minutely in size, with all adults measuring on average and . They exhibit sexual dimorphism, in that the males are slightly larger than females, with the exception of the Hawaiian monk seal, where females are larger. Its white belly, gray coat, and slender physique distinguish it from the harbor seal (Phoca vitulina), another earless seal.
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Some species retain a pelvic girdle with a pair of vestigial claws on either side of the cloaca. Lizards have evolved elongate bodies without limbs or with greatly reduced limbs about twenty-five times independently via convergent evolution, leading to many lineages of legless lizards. Legless lizards resemble snakes, but several common groups of legless lizards have eyelids and external ears, which snakes lack, although this rule is not universal (see Amphisbaenia, Dibamidae, and Pygopodidae). Living snakes are found on every continent except Antarctica, and on most smaller land masses; exceptions include some large islands, such as Ireland, Iceland, Greenland, the Hawaiian archipelago, and the islands of New Zealand, and many small islands of the Atlantic and central Pacific oceans.
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The shrew moles (Uropsilus) are shrew-like members of the mole family of mammals endemic to the forested, high-alpine region bordering China, Myanmar, and Vietnam. They possess a long snout, a long slender tail, external ears, and small forefeet unspecialized for burrowing. Although they are similar to shrews in size, external appearance, and, presumably, ecological habits, they are nevertheless talpids and considered true moles, as they share a full zygomatic arch with all other moles, while this arch is completely absent in shrews. The genus is the only one of the subfamily Uropsilinae, which is one of the three main subfamilies of Talpidae, the other two being Talpinae, or Old World moles and relatives; and the Scalopinae, or New World moles.
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Red ear syndrome (RES) is a rare disorder of unknown etiology which was originally described in 1994. The defining symptom of red ear syndrome is redness of one or both external ears, accompanied by a burning sensation. A variety of treatments have been tried with limited success. Red ears are also often a classic symptom of relapsing polychondritis (RP), a rare autoimmune disease that attacks various cartilage areas (and sometimes other connective tissue areas) in the body; research estimates that RP affects 3-5 people per million. Red ears in RP indicate inflamed cartilage (and sometimes the skin of the outer ear along with the cartilage) and often cause moderate to extreme pain during “flares” of the disease, which can be acute and/or chronic. Red ears in RP can be bilateral or unilateral, and are described as “earlobe sparing” due to the lack of cartilage in the earlobe. Prolonged inflammation can eventually result in deteriorated ear cartilage (often described as “cauliflower ear” or “floppy ear”), and even partial or total loss of hearing.
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Mayor argues that Protoceratops fossils, seen by ancient observers, may have been interpreted as evidence of a half-bird-half-mammal creature.BBC Four television program Dinosaurs, Myths and Monsters, 8.00–0.00 pm Sat 10 December 2011 and 9.55–10.55 pm Tue 13 December 2011 She argues that over-repeated retelling and drawing or recopying its bony neck frill (which is rather fragile and may have been frequently broken or entirely weathered away) may become large mammal-type external ears, and its beak may be treated as evidence of a part-bird nature and lead to bird-type wings being added. Paleontologist Mark P. Witton has contested this hypothesis, arguing that it ignores the existence of depictions of griffins throughout the Near East dating to long before the time when Mayor posits the Greeks became aware of Protoceratops fossils in Scythia. Witton further argues that the anatomies of griffins in Greek art are clearly based on those of living creatures, especially lions and eagles, and that there are no features of griffins in Greek art that can only be explained by the hypothesis that the griffins were based on fossils.
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