With that in mind, here are a few extinct species we hope scientists never revive. The ancient crocodiles of the Deinosuchus ...

Crocodiles are some of the most fearsome apex predators on the planet, but this crocodilian ancestor puts our crocs to shame.

Previous assessments relied on extrapolations from crocodile bites or fossil T ... bit at an estimated 41,000 pounds; Deinosuchus, an ancient crocodilian, at about 23,000 pounds.) ...

The ancient crocodiles of the Deinosuchus genus grew as large as a school bus and are notably believed to prey on large dinosaurs — like the T-rex — by ambushing them near prehistoric shores.