COLUMBIA — If the 30-foot-long body wasn't enough to intimidate its enemies, the thick-skinned shield on the top of its 5-foot-long head was likely to get the job done. About 95 million years ago, this reptile roamed the Mesozoic Era rivers of Africa and is believed to be the earliest ancestor of modern crocodiles.
MU researcher discovers ancient crocodile, 'Shieldcroc'
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