10 Prehistoric Sea Creatures We’re Thankful Are Extinct



Thalassomedon

The name Thalassomedon translates to “sea lord” from Greek, and there is a perfect reason for that. They were huge predators known to reach lengths of up to 40 feet. Their long necks were accompanied by sharpened teeth.

Nothosaurus

The Nothosaurus was not quite the biggest creature in the world, as they only reached lengths of around 13 feet, but they had a mouth full of outward-facing teeth that were razor sharp. They mostly fed on squid and fish.