Prehistoric Marine Animals List

On this list youll find ten of the most interesting and largest prehistoric sea animals from the megalodon to the spinosaurus and the helicoprion.

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. At 12-15 meters long maybe more it was one of the largest crocodilians ever to have existed. Examples of Mesozoic Era animals include dinosaurs pterosaurs ammonites sharks plesiosaurs ichthyosaurs mosasaurs pseudosuchians insects and early mammals.

What was the biggest prehistoric water animal. 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. Plus science-minded entertainment sources like the Discovery Channel love creatures that.

They gave birth to live young which means they may have been warm-blooded. It lived back in Cambrian times first appearing over 500 million years ago and when fossils of it were first found the various disassociated parts of it were described as jellyfish the mouth shrimp tails large grasping appendages and a sponge the body. Geologist William Buckland described the animal as a sea serpent run through a turtle Leedsicthys.

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. A prized species of tuna. A large edible sea snail of coastal waters.

Here are 10 of the scariest prehistoric sea monsters to ever call the ocean home in prehistory. Marine biologists didnt know that fishermen off the coast of Africa had been occasionally catching them for years. - predators include the Shastasaurus a reptile 21 meters 68 feet long.

Purussaurus was the top predator in that sea and with good reason. A bright-colored fish of coral reefs. The remains of other animals missing limbs or bitten in half are a macabre proof of this giant caimans appetite.