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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 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.
Plesiosaur fossils can be found all over the world, Marx said. The combination of both smooth and scaly skin is unusual, and it had different functions, the researchers said.
It is believed that Jerusalem is the seat of Christendom hence, by praying for the peace of Jerusalem, it is a prayer for peace for all Christendom and in the world at large. Lastly, they celebrate Love Feast, during which the church provides a meal of water and bread for the congregation, and read a few bible passages while they eat the food. [4]
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 ...
Albertonectes is the longest elasmosaur, and more generally plesiosaur, known to date both in neck and total body length, estimated around 12 metres (39 ft) long and weighing up to 4.8 metric tons (5.3 short tons).
On 12 August 2011, researchers from the U.S. described a fossil of a pregnant plesiosaur found on a Kansas ranch in 1987. [11] The plesiosauroid, Polycotylus latippinus , has confirmed that these predatory marine reptiles gave birth to single, large, live offspring—contrary to other marine reptile reproduction which typically involves a large ...