Prehistoric creatures

Prehistoric mammals By Nobu Tamura Prehistoric mammals are groups of mammals that became extinct before humans developed writing. 164…

Learn about water dinosaur-like reptiles. Know which dinosaurs lived close to water and which prehistoric aquatic reptiles swam underwater.

Prehistoric whale evolution, illustrated by Tiffany Turrill.

Inostrancevia lived during the Late Permian period and was the largest of the gorgonopsid species. Inostrancevia's most striking feature was its long, saber-tooth-like canines. It had a total body length of around 3.5 m, a weight of 300 kg and a huge skull, which measured up to 60 cm in length. Inastroncevia was likely at the top of the food chain in Late Permian Russia, preying on the large herbivorous creatures it shared the land with.

Studies of Spinosaurids swimming

1. Herbivore dinosaurs had to eat leaves instead of grass, because grass (a C4 plant) didn't evolve until 10 million years ago.