Prehistoric Marine Animals List

This six-foot fish was known from the fossil record but thought to die out 65 million years ago around the same time as the dinosaurs.

Prehistoric marine animals list. In contrast modern African elephants are between 82 and 13 feet tall. Top 10 Prehistoric Sea Creatures Tylosaurus. Ourfirst entry is actually the oldest animal on the list Dunkleosteuswas a placodermspecifically an arthrodire placoderm fish thatlived during the Devonian period when vertebrates were.

On this list youll find ten of the most interesting and largest prehistoric sea animals from the megalodon to the spinosaurus and the helicoprion. From here you will have entries for the dinosaurs but also other creatures of the Mesozoic like the pterosaurs early mammals ancient crocodiles and the first birds Other index entries will be for the mammals that became the dominant life forms of the planet after the dinosaurs with entries from the sabre toothed cats to the first whales You will even find entries for animals that are prehistoric but. The largest Hyaenodons were among the largest predators of their time.

A small oily fish of the Atlantic and Pacific providing food for many fish marine mammals and birds. Here are 10 of the scariest prehistoric sea monsters to ever call the ocean home in prehistory. What was the biggest prehistoric water animal.

With a long skull and powerful doglike body it would have had little to fear from most other animals. This was because it used to lay its jelly covered eggs in water. Elasmosaurus a 14 meters 45 feet reptile that swallowed stones whole or the Mosasaurus which looked like a 15 meter 50 feet crocodile.

It appeared in the oceans of the world about 360 million years ago during the Upper Devonian period and died out almost at the same time as the dinosaurs pterosaurs and marine reptiles at the end of the Cretaceous period. Purussaurus was the top predator in that sea and with good reason. Megalodon didnt earn its nickname Big Tooth for nothing.

A prized species of tuna. Megalodon is probably the best-known creature in the list. Fossils of steppe mammoth up to 15 feet 45 meters in height and nine to 11 tons in weight have been found.