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Proceedings of the National Academy of Sciences of the United States of America, Vol. 5, No. 7 (Jul. 15, 1919), pp. 250-252 (3 pages) ...
Chalicotheres were just plain weird. With horse-like heads, but bodies which appeared to be equal parts gorilla and giant ground sloth, these herbivorous mammals have stymied paleontologists for well ...
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