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{{Taxonomy
|name=Plesiosaur
|image=plesiosaur_owen.png
|caption=
|superkingdom=
|kingdom= Animalia
|subkingdom=
|superphylum=
|phylum=Chordata
|subphylum=
|infraphylum=
|microphylum=
|superdivision=
|division=
|subdivision=
|superclass=
|class=Sauropsida
|subclass=
|infraclass=
|superorder=Sauropterygia
|order=Plesiosauria
|suborder=Plesiosauroidea
|infraorder=
|superfamily=
|family=Cimoliasauridae, Cryptoclididae, Elasmosauridae, Plesiosauridae, Polycotylidae
|subfamily=
|supertribe=
|tribe=
|subtribe=
|genera=
|genus=
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|species=
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|alt=
}}
'''Plesiosaurs''' are large [[reptile]]s characterized by long necks with small heads; stocky, finless tails; and a broad, turtle-like body with four flippered appendages. Based on their morphological design and fossilized feces<ref>[http://news.bbc.co.uk/1/hi/sci/tech/4341204.stm "Plesiosaur bottom-feeding shown"], BBC</ref>, paleontologists infer that they were sea-dwelling carnivores that dined on fish and shellfish.
'''Plesiosaurs''' are large [[reptile]]s characterized by long necks with small heads; stocky, finless tails; and a broad, turtle-like body with four flippered appendages. Based on their morphological design and fossilized feces<ref>[http://news.bbc.co.uk/1/hi/sci/tech/4341204.stm "Plesiosaur bottom-feeding shown"], BBC</ref>, paleontologists infer that they were sea-dwelling carnivores that dined on fish and shellfish.
Their [[fossil]] skeletons were first discovered in early 19th century in England by [[Mary Anning]] and were among the first large vertebrate fossils found. Since then, many more have been found and there are a number of complete specimens.
Their [[fossil]] skeletons were first discovered in early 19th century in England by [[Mary Anning]] and were among the first large vertebrate fossils found. Since then, many more have been found and there are a number of complete specimens.