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Plesiosaurus costatus

Reptilia - Plesiosauria

Taxonomy
Plesiosaurus costatus was named by Owen (1840). Its type specimen is BRSMG Cb 2457 (now destroyed), a set of vertebrae (cervical vertebra), and it is a 3D body fossil. Its type locality is Rhaetic Bone Bed, Aust Cliff, which is in a Rhaetian coastal conglomerate in the Westbury Formation of the United Kingdom.

It was recombined as Rhomaleosaurus costatus by Persson (1963).

Sister species lacking formal opinion data
P. morinicus

Synonymy list
YearName and author
1840Plesiosaurus costatus Owen pp. 80-81
1889Plesiosaurus costatus Lydekker p. 282
1948Plesiosaurus costatus Swinton pp. 350-356
1960Plesiosaurus costatus Delair p. 55
1963Rhomaleosaurus costatus Persson p. 21

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
suborderSauropterygia
orderPlesiosauriade Blainville 1835
superfamilyPlesiosauroideaWelles 1943
genusPlesiosaurus
speciescostatus

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Plesiosaurus costatus Owen 1840
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Diagnosis
No diagnoses are available