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Eurycleidus arcuatus

Reptilia - Sauropterygia - Rhomaleosauridae

Taxonomy
Plesiosaurus arcuatus was named by Owen (1840). Its type specimen is BMNH 2030 (lectotype), 2027-2029, 2047, 2061, R1317-1319 (paralectotypes, probably belonging to the same individual), a partial skeleton (most of a single skeleton), and it is a 3D body fossil. Its type locality is Street (general), which is in a Hettangian shallow subtidal limestone/shale in the Blue Lias Formation of the United Kingdom.

It was recombined as Thaumatosaurus arcuatus by Lydekker (1889); it was recombined as Eurycleidus arcuatus by Andrews (1922), Cruickshank (1994) and O'Keefe (2001).

Synonymy list
YearName and author
1840Plesiosaurus arcuatus Owen p. 75
1851Plesiosaurus arcuatus Mantell p. 143
1889Thaumatosaurus arcuatus Lydekker p. 163
1922Eurycleidus arcuatus Andrews p. 294
1994Eurycleidus arcuatus Cruickshank p. 153
2001Eurycleidus arcuatus O'Keefe p. 10

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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
genusEurycleidus
speciesarcuatus()

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