These ancient crocs weighed about 1,000 lbs, ... Kyung Soo Kim/CU Denver Martin Lockley remarked that nobody was even aware of large bipedal crocs having existed in the Early Cretaceous period.

The modalities and date of emergence of bipedalism remain bitterly debated, in particular because of a small number of very old human fossils. Sahelanthropus tchadensis, discovered in 2001 in Chad ...