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Archaeonectrus rostratus

Reptilia - Sauropterygia - Rhomaleosauridae

Taxonomy
Plesiosaurus rostratus was named by Owen (1865). Its type specimen is BMNH 38525, a skeleton, and it is a 3D body fossil. Its type locality is Charmouth, E.C.H. Day collection, which is in a Sinemurian marine horizon in the Charmouth Mudstone Formation of the United Kingdom.

It was recombined as Rhomaleosaurus rostratus by Persson (1963); it was recombined as Archaeonectrus rostratus by Storrs (1997).

Synonymy list
YearName and author
1865Plesiosaurus rostratus Owen p. 20
1889Plesiosaurus rostratus Lydekker p. 271 fig. 81
1894Plesiosaurus rostratus Browne p. 749
1960Plesiosaurus rostratus Delair pp. 56-57
1963Rhomaleosaurus rostratus Persson p. 21
1997Archaeonectrus rostratus Storrs p. 179

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
RankNameAuthor
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
orderSauropterygia
Pistosauria(Baur 1890)
Plesiosauria(de Blainville 1835)
familyRhomaleosauridaeNopcsa 1928
genusArchaeonectrusNovozhilov 1964
speciesrostratus()

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.

Diagnosis
No diagnoses are available