Discover Magazine
Deer, elk, giraffes, and other ungulates may have all gotten their headgear from a common ancestor that lived 15 million years to 20 million years ago…
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Deer and Other Hoofed Mammals May Have Horns Because of One Ancient Ancestor
Deer, elk, giraffes, and other ungulates may have all gotten their headgear from a common ancestor that lived 15 million years to 20 million years ago…