Dinosaur Bones Plesiosaur Beautiful Bone Isle of Wight, United Kingdom Large for Sale

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Dinosaur Bones Plesiosaur Beautiful Bone Isle of Wight, United Kingdom Large For Sale

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Dinosaur Bones Plesiosaur Beautiful Bone Isle of Wight, United Kingdom Large:
$50.00

Plesiosaur Bone Isle of Wight, United Kingdom

This Bone isfrom a Plesiosaur. It is in its original form. Itcomewith a photo and description of the bone. The bone is from the Isle of Wight, United Kingdom.

The Plesiosauria ( plesios, meaning \"near to\" and Sauria)or plesiosaurs are an order or clade of Mesozoic marine reptiles (marineSauropsida), belonging to the Sauropterygia.

Plesiosaurs first appeared in the latest Triassic Period, possibly in the Rhaetianstage.They became especially common during the Jurassic Period, thriving untiltheir disappearance due to the Cretaceous–Paleogene extinction event at the endof the Cretaceous Period. They had a worldwide oceanic distribution.

Plesiosaurs were among the first fossil reptiles discovered. In thebeginning of the nineteenth century, scientists realised how distinctive theirbuild was and they were named as a separate order in 1835. The firstplesiosaurian genus, the eponymous Plesiosaurus, was named in 1821.Since then, more than a hundred valid species have been described. In the earlytwenty-first century, the number of discoveries has increased, leading to animproved understanding of their anatomy, relationships and way of life.

Plesiosaurs had a broad flat body and a short tail. Their limbs had evolvedinto four long flippers, which were powered by strong muscles attached to widebony plates formed by the shoulder girdle and the pelvis. The flippers made aflying movement through the water. Plesiosaurs breathed air, and bore liveyoung; there are indications that they were warm-blooded.

Plesiosaurs showed two main morphological types. Some species, with the\"plesiosauromorph\" build, had (sometimes extremely) long necks andsmall heads; these were relatively slow and caught small sea animals. Otherspecies, some of them reaching a length of up to seventeen metres, had the\"pliosauromorph\" build with a short neck and a large head; these wereapex predators, fast hunters of large prey. The two types are related to thetraditional strict division of the Plesiosauria into two suborders, thelong-necked Plesiosauroidea and the short-neck Pliosauroidea. Modern research,however, indicates that several \"long-necked\" groups might have hadsome short-necked members or vice versa. Therefore the purely descriptive terms\"plesiosauromorph\" and \"pliosauromorph\" have beenintroduced, which do not imply a direct relationship.\"Plesiosauroidea\" and \"Pliosauroidea\" today have a morelimited meaning. The term \"plesiosaur\" is properly used to refer tothe Plesiosauria as a whole, but informally it is sometimes meant to indicateonly the long-necked forms, the old Plesiosauroidea.

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