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Rhomaleosauridae

Reptilia - Plesiosauria - Rhomaleosauridae

Synonyms
Synonymy list
YearName and author
1928Rhomaleosauridae Nopcsa
1956Thaumatosauridae Romer
1963Rhomaleosauridae Persson p. 6
1966Rhomaleosauridae Kuhn p. 115
2001Rhomaleosauridae O'Keefe p. 19 fig. 20
2010Rhomaleosauridae Ketchum and Benson p. 15
2011Rhomaleosauridae Ketchum and Benson p. 126
2012Rhomaleosauridae Benson et al.
2014Rhomaleosauridae Benson and Druckenmiller figs. 2-3
2015Rhomaleosauridae Smith
2016Rhomaleosauridae O'Gorman p. 38
2017Rhomaleosauridae Smith and Araújo

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
suborderSauropterygia
orderPlesiosauriade Blainville 1835
familyRhomaleosauridaeNopcsa 1928
familyRhomaleosauridaeNopcsa 1928

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.

Fm. †Rhomaleosauridae Nopcsa 1928
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G. †Anningasaura Vincent and Benson 2012
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†Anningasaura lymense Vincent and Benson 2012
G. †Archaeonectrus Novozhilov 1964
G. †Atychodracon Smith 2015
G. †Avalonnectes Benson et al. 2012
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†Avalonnectes arturi Benson et al. 2012
G. †Bishanopliosaurus Dong 1980
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†Bishanopliosaurus zigongensis Gao et al. 2004
G. †Borealonectes Sato and Wu 2008
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†Borealonectes russelli Sato and Wu 2008
G. †Eurycleidus Andrews 1922
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†Eurycleidus arcuatus Owen 1840
G. †Macroplata Swinton 1930
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†Macroplata tenuiceps Swinton 1930
G. †Maresaurus Gasparini 1997
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†Maresaurus coccai Gasparini 1997
G. †Meyerasaurus Smith and Vincent 2010
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†Meyerasaurus victor Fraas 1910
G. †Rhomaleosaurus Seeley 1874
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†Rhomaleosaurus cramptoni Carte and Baily 1863
†Rhomaleosaurus megacephalus Stutchbury 1846
†Rhomaleosaurus zetlandicus Phillips 1854
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Invalid names: Plesiosaurus propinquus Tate and Blake 1876 [synonym], Rhomaleosaurus thorntoni Andrews 1922 [synonym]
G. †Thaumatodracon Smith and Araújo 2017
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†Thaumatodracon wiedenrothi Smith and Araújo 2017
G. †Yuzhoupliosaurus Zhang 1985
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Invalid names: Thaumatosauridae Romer 1956 [synonym]
Diagnosis
ReferenceDiagnosis
F. R. O'Keefe 2001"Grooves in front of external nares present; paraoccipital process robust; squared lappet of pterygoid underlying pterygoid quadrate ramus present; lateral palatal fenestration present; bowed maxilla present; premaxillary/dentary fangs present; cervical centra lengths less than heights; cervical zygopophyses as wide as centra (reversal)."
Measurements
No measurements are available
Composition: hydroxyapatiteo
Environment: marineo
Locomotion: actively mobileo
Life habit: aquatico
Depth habitat: surfaceo
Diet: carnivoreo
Reproduction: viviparouso
Created: 2009-07-20 06:05:48
Modified: 2011-08-12 01:58:15
Source: o = order
Reference: Kiessling 2004

Age range: base of the Rhaetian to the top of the Callovian or 208.50000 to 163.50000 Ma

Collections (26 total)


Time interval Ma Country or state Original ID and collection number
Rhaetian208.5 - 201.3United Kingdom (England) Plesiosaurus megacephalus (96612)
Early/Lower Hettangian201.3 - 196.5United Kingdom (England) Plesiosaurus arcuatus, Rhomaleosaurus megacephalus, Avalonnectes arturi (119083) Rhomaleosaurus megacephalus (119284 119285)
Late/Upper Hettangian201.3 - 196.5United Kingdom (England) Macroplata tenuiceps (118315)
Early/Lower Hettangian - Early/Lower Pliensbachian201.3 - 183.0United Kingdom (England) Anningasaura lymense, Plesiosaurus arcuatus (118938)
Hettangian - Early/Lower Pliensbachian201.3 - 183.0United Kingdom (England) Plesiosaurus arcuatus (119084)
Sinemurian199.3 - 190.8United Kingdom (England) Thaumatodracon weidenrothi (188798) Thaumatosaurus arcuatus (122153)
Pliensbachian - Toarcian190.8 - 174.1United Kingdom (England) Thaumatosaurus propinquus (142108)
Early/Lower Pliensbachian189.6 - 183.0Denmark Rhomaleosauridae indet. (90434)
Early/Lower Toarcian183.0 - 182.0Germany (Baden-Württenburg) Plesiosaurus victor (138587)
Early/Lower Toarcian183.0 - 182.0United Kingdom (England) Plesiosaurus zetlandicus (90458) Rhomaleosaurus propinquus, Plesiosaurus cramptoni (90448)
Falciferum - Bifrons183.0 - 175.6United Kingdom (England) Rhomaleosaurus propinquus, Rhomaleosaurus cramptoni (90459) Thaumatosaurus cramptoni, Rhomaleosaurus thorntoni (118939)
Toarcian182.7 - 174.1United Kingdom (England) Thaumatosaurus cramptoni, Thaumatosaurus propinquus (122373) Thaumatosaurus propinquus (142107)
Toarcian182.7 - 174.1China (Chongqing) Bishanopliosaurus youngi (98783)
Middle Jurassic174.7 - 161.5China (Chongqing) Yuzhoupliosaurus chengjiangensis (98785)
Middle Jurassic174.7 - 161.5China (Sichuan) Bishanopliosaurus sp. (232460)
Early/Lower Bajocian171.6 - 168.4Argentina (Neuquen) Maresaurus coccai (102280)
Bajocian170.3 - 168.3China (Sichuan) Bishanopliosaurus zigongensis (157052)
Bajocian - Oxfordian170.3 - 157.3China (Sichuan) Bishanopliosaurus youngi (24883)
Callovian166.1 - 163.5Canada (Northwest Territories) Cryptoclidus richardsoni (131230)
Early/Lower Callovian164.7 - 161.2Russian Federation (Volgograd) Rhomaleosauridae indet. (167926)