The evolution of crocodiles

The evolution of crocodiles. Xinran Jin.

The Origin of Crocodiles. According to National Geographic, "Crocodiles today are often considered survivors of the age of dinosaurs." For now, that's true: modern crocodiles have been around for about 80 million years. But they are just a small fraction of the crocodile relatives who once roamed the earth and, in fact, once ruled the planet. The Crurotarsan (a term paleontologists use to include all crocodile relatives) emerged about 240 million years ago, usually at the same time as the dinosaurs (Source: MEL White, National Geographic magazine, November 2009)..

The beginning Mesozoic period of the Triassic. 图标 描述已自动生成.

Here is where your presentation begins. The Jurassic Period.

The Cretaceous Period. The final part of the Mesozoic Era, the Cretaceous Period, began about 145 million years ago and lasted until about 65 million years ago. It was during this final epic that the modern crocodile, Crocodylidae, first appeared as a distinct species and flourished..

References. 图标 描述已自动生成. 1. https:// factsanddetails.com / asian /cat68/sub434/item2435.html 2. https:// www.thoughtco.com /prehistoric-crocodile-profile-4047616.

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