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Terrestrial Origins and Evolution
Pakasuchus
02/07/11

 

The discovery by an international team of researchers of a relatively lanky, cat-sized animal with mammal-like teeth and a land-based lifestyle supports a growing consensus that crocodiles were once far more diverse than they are today, dominating ecological niches in the Southern Hemisphere during the Cretaceous Period that were filled in the Northern Hemisphere by early mammals. Credit: Mark Witton, University of Portsmouth

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