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Thalattosauroidea

Reptilia - Thalattosauria

Synonymy list
YearName and author
1928Thalattosauroidea Nopcsa
1999Thalattosauroidea Nicholls p. 26
2009Thalattosauroidea Wu et al. p. 17 fig. 8
2020Thalattosauroidea Druckenmiller et al.

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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()
Thalattosauriformes
orderThalattosauria
superfamilyThalattosauroideaNopcsa 1928
superfamilyThalattosauroideaNopcsa 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.

Superfm. †Thalattosauroidea Nopcsa 1928
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G. †Agkistrognathus Nicholls and Brinkman 1993
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Agkistrognathus campbelli Nicholls and Brinkman 1993
G. †Clarazia Peyer 1936
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Clarazia schinzi Peyer 1936
G. †Gunakadeit Druckenmiller et al. 2020
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Gunakadeit joseeae Druckenmiller et al. 2020
G. †Hescheleria Peyer 1936
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Hescheleria rubeli Peyer 1936
G. †Nectosaurus Merriam 1905
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Nectosaurus halius Merriam 1905
G. †Paralonectes Nicholls and Brinkman 1993
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Paralonectes merriami Nicholls and Brinkman 1993
Fm. †Thalattosauridae Merriam 1904
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G. †Concavispina Zhao et al. 2013
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Concavispina biseridens Zhao et al. 2013
Invalid names: Thalattosaurida Nicholls 1999 [empty]
G. †Thalattosaurus Merriam 1904
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Thalattosaurus alexandrae Merriam 1904
Thalattosaurus borealis Nicholls and Brinkman 1993
Invalid names: Thalattosaurus perrini Merriam 1905 [nomen dubium], Thalattosaurus shastensis Merriam 1905 [nomen dubium]
G. †Xinpusaurus Yin 2000
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Xinpusaurus kohi Jiang et al. 2004
Xinpusaurus suni Yin 2000
Xinpusaurus xingyiensis Li et al. 2016
Diagnosis
ReferenceDiagnosis
E. L. Nicholls 1999It is diagnosed by the following unequivocal synapomorphies—[11 ] anterior end of the max illary tooth row curved dorsally; [26] rows of slender teeth on pterygoid plate; [27] appearance of heavy, conical teeth on vomer.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marineo
Locomotion: actively mobilec
Created: 2017-04-17 10:38:24
Modified: 2017-04-17 10:38:24
Source: o = order, c = class, subp = subphylum
References: Hendy et al. 2009, Bush and Bambach 2015, Carroll 1988

Age range: base of the Smithian to the top of the Tuvalian or 251.30000 to 221.50000 Ma

Collections (21 total)


Time interval Ma Country or state Original ID and collection number
Smithian251.3 - 247.2Canada (British Columbia) Paralonectes merriami (152277) Paralonectes merriami, Agkistrognathus campbelli (105083)
Illyrian247.2 - 242.0Switzerland Clarazia schinzi (174989) Hescheleria ruebeli (174992)
Anisian - Ladinian247.2 - 237.0Canada (British Columbia) Thalattosaurus sp. TMP 88.99.21, Paralonectes sp., Thalattosaurus borealis (152278)
Ladinian242.0 - 237.0China (Guizhou) Xinpusaurus xingyiensis (213309)
Longobardian242.0 - 235.0China (Guizhou) Xinpusaurus sp. (196508) Xinpusaurus xingyiensis (153372 196509 196510)
Carnian237.0 - 228.0USA (Oregon) T. Brisbois Member sp. (220464)
Carnian237.0 - 228.0China (Guizhou) Concavispina biseridens, Xinpusaurus suni, Xinpusaurus kohi (97906)
Carnian237.0 - 228.0USA (California) Nectosaurus halius (190855) Nectosaurus sp. (152274) Nectosaurus sp., Thalattosaurus sp. (152275)
Tuvalian232.0 - 221.5USA (California) Nectosaurus sp. (188587) Nectosaurus sp., Nectosaurus halius (136683) Thalattosaurus alexandrae, Nectosaurus halius (136682)
Tuvalian232.0 - 221.5China (Guizhou) Xinpusaurus suni, Xinpusaurus bamaolinensis (85166)
Norian228.0 - 208.5USA (Alaska) Gunakadeit joseeae (207961)
Norian - Rhaetian228.0 - 201.3Austria Thalattosauriformes indet. (152276)