Cretaceous Peroid

Saurischian Dinosaurs

How did the theropods change during the Cretaceous period?

During the Cretaceous period, the theropods became much more diverse, with ceratosaurs and the tetanurans well represented. The subgroups of the tetanurans (carnosaurs and coelurosaurs) evolved new species. For instance, the coelurosaurs, composed of the ornithomimosaurs and maniraptorans, became very diverse, although some, such as the carnosaurs, became less dominant.


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