marine

Asteracanthus

Asteracanthus was a 6 foot long hybodont shark which lived from the middle Jurassic Period to the middle Cretaceous Period 165-100 million years ago. Unlike most prehistoric sharks which are known only from teeth, Asteracanthus is also known from some… Read More ›

Plesiosuchus

Plesiosuchus was a 20 foot long marine crocodylomorph which lived in the tropical sea which once covered Europe during the late Jurassic Period 155-150 million years ago. In the 1860s, fragmentary fossils were discovered in Dorset, England by a local… Read More ›

Caypullisaurus

Caypullisaurus was a 20 foot long ichthyosaur which lived off the coast of Argentina (and possibly elsewhere) during the late Jurassic and early Cretaceous Periods 150-140 million years ago. In 1989, the front half of a skeleton of a medium-sized… Read More ›

Muraenosaurus

Muraenosaurus, “the moray eel lizard”, was a medium-sized plesiosaur which lived in the sea which once covered southern England and northern France during the middle of the Jurassic Period 165-164 million years ago. In the 19th Century, a partial skeleton… Read More ›

Kronosaurus

Kronosaurus was a massive marine reptile called a pliosaur which lived in the waters around northeastern Australia during the middle Cretaceous Period circa 105-100 million years ago. The fossils of this animal were discovered in 1899 in Queensland, Australia, consisting… Read More ›

Shonisaurus

Shonisaurus was an absolutely gargantuan ichthyosaur which swam off North America’s Pacific coast during the middle of the Triassic Period 227 million years ago. Shonisaurus was one of the largest ichthyosaurs to have existed, measuring 45 feet long. Only a… Read More ›

Hauffiosaurus

Hauffiosaurus was a genus of plesiosaur which lived around England and Germany during the early Jurassic Period. There are currently three known species: H. zanoni, H. tomistomimus, and H. longirostris. Of these, Hauffiosaurus longirostris was the largest, measuring almost 16… Read More ›

Macroplata

Macroplata was a 15 foot long plesiosaur which lived around England during the early Jurassic Period 199 million years ago. In either late 1927 or early 1928, a plesiosaur skeleton was discovered in a limestone quarry in Harbury, Warwickshire, England…. Read More ›

Temnodontosaurus

Temnodontosaurus was a massive 30 foot long ichthyosaur which lived in the seas around western Europe during the early Jurassic Period approximately 200-180 million years ago. The time from the middle Triassic to the early Jurassic Periods, approximately 240-175 million… Read More ›

Plesiosaurus

Plesiosaurus was a 10 foot long marine reptile which swam in the seas around England during the early Jurassic Period about 195 million years ago. During the early 19th Century, isolated fossil bones were discovered scattered in various locations on… Read More ›