Facts about Pliosaurs, an extinct prehistoric animal

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Dinosaur Jungle   >   Other Prehistoric Animals   >   Pliosaurs



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Scientific Classification
  Kingdom Animalia
  Phylum Chordata
  Class Sauropsida
  Superorder Sauropterygia
  Order Plesiosauria
  Suborder Pliosauroidea
Pliosaurs were a group of extinct marine reptiles. Their fossils are found in Jurassic and Cretaceous period rocks, and they are believed to have evolved during the earlier Triassic period. Pliosaurs, although not themselves dinosaurs, seem to have gone extinct at the same time as the dinosaurs, during the Cretaceous-Tertiary mass extinction.

Early Pliosaurs are generally similar to Plesiosaurs in appearance, and are believed to have evolved from Plesiosaurs. It is not however entirely clear whether all Pliosaurs evolved from a common ancestor, or whether different species of Pliosaurs independently evolved similar adaptations.

Pliosaurs can be recognized by their short neck (in contrast to the longer neck of Plesiosaurs), and their four paddle-like limbs. Their heads were elongated and filled with conical teeth - suggesting they were carnivores. Pliosaurs are believed to have eaten fish, Ichthyosaurs, Plesiosaurs, and other Pliosaurs. Pliosaurs ranged between 13 feet (4 meters) and 50 feet (15 meters) in length - and the skulls of the largest animals were 10 feet (3 meters) in length.

Fossils of Pliosaurs have been found around the world including in England, Norway, the United States, Mexico, South America, and Australia.

Pliosaurs Timeline:

Pliosaurs were marine reptiles that lived between 228 and 65 million years ago

Pliosaurs were marine reptiles that lived between 228 and 65 million years ago

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