3 Sentences With "protohuman"

How to use protohuman in a sentence? Find typical usage patterns (collocations)/phrases/context for "protohuman" and check conjugation/comparative form for "protohuman". Mastering all the usages of "protohuman" from sentence examples published by news publications.

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Our protohuman ancestors ate ferns and tubers as vehicles for nutrients and calories, nothing more. from The New York Times
Raw Data Carcinogens abounded 1.7 million years ago in Early Pleistocene times when a nameless protohuman wandered the South African countryside in what came to be known as the Cradle of Humankind. from The New York Times
For instance, a person cannot travel to the same time twice. Attempting to do results in one being thrown back to the present, "torn to shreds in the process." The same would presumably result from attempting to interact with early humans. Therefore, the time machine is restricted from visiting the period of protohuman development, and refrains from visiting any time within one thousand years of a previous visit.