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The probable food source of plesiosaurs varied depending on whether they belonged to the long-necked "plesiosauromorph" forms or the short-necked "pliosauromorph" species. The extremely long necks of "plesiosauromorphs" have caused speculation as to their function from the very moment their special build became apparent.
Plesiosaurus (Greek: πλησίος (plesios), near to + σαῦρος (sauros), lizard) is a genus of extinct, large marine sauropterygian reptile that lived during the Early Jurassic. It is known by nearly complete skeletons from the Lias of England.
Elasmosaurus differed from all other plesiosaurs by having 72 neck vertebrae; more may have been present but were later lost to erosion or after excavation. Only Albertonectes had more neck vertebrae, 76, and the two are the only plesiosaurs with a count higher than 70; more than 60 vertebrae is very derived (or "advanced") for plesiosaurs. [14 ...
The story of the Book of Genesis places the first man and woman, Adam and Eve, in the Garden of Eden, where they may eat the fruit of many trees, but are forbidden by God to eat from the tree of knowledge of good and evil.
Plesiosauroidea (/ ˈ p l iː s i ə s ɔːr /; Greek: πλησιος plēsios 'near, close to' and σαυρος sauros 'lizard') is an extinct clade of carnivorous marine reptiles.They have the snake-like longest neck to body ratio of any reptile.
Plesiosaur gastroliths from Tropic Shale. A gastrolith, also called a stomach stone or gizzard stone, is a rock held inside a gastrointestinal tract. Gastroliths in some species are retained in the muscular gizzard and used to grind food in animals lacking suitable grinding teeth. In other species the rocks are ingested and pass through the ...
As the first species name given to a distinctive and well preserved Plesiosaurus skeleton it has come to be regarded as both the type specimen of Plesiosaurus dolichodeirus specifically and of the genus Plesiosaurus as a whole. [15] [17] 1829. Mary Anning collected the Plesiosaurus dolichodeirus specimen now known as BMNH R.1313. [18]
The genus name comes from the Māori words kai meaning "food" and whekea meaning "squid", together meaning "squid-eater". The specific epithet refers to Kātiki Beach, to the north of the find location. [1] Kaiwhekea was approximately 6.5–7 metres (21–23 ft) long. It lived around 70-69 million years ago.