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Plesiosaurus hesternus

Reptilia - Plesiosauria

Taxonomy
Plesiosaurus hesternus was named by Welles (1953). Its type specimen is UCMP 41599, a set of vertebrae, and it is a 3D body fossil. Its type locality is Oakley Ranch (UCMP V4958), which is in a Tithonian marine shale in the "Franciscan-Knoxville shales" Formation of California.

Sister species lacking formal opinion data
P. morinicus

Synonymy list
YearName and author
1953Plesiosaurus hesternus Welles pp. 743-744 fig. 1

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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
specieshesternus

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 hesternus Welles 1953
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Diagnosis
No diagnoses are available