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Thalattosauroidea
Taxonomy
Thalattosauroidea was named by Nopcsa (1928). It was considered monophyletic by Nicholls (1999).
It was assigned to Thalattosauria by Nicholls (1999); and to Thalattosauria by Wu et al. (2009) and Druckenmiller et al. (2020).
It was assigned to Thalattosauria by Nicholls (1999); and to Thalattosauria by Wu et al. (2009) and Druckenmiller et al. (2020).
Synonymy list
Year | Name and author |
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1928 | Thalattosauroidea Nopcsa |
1999 | Thalattosauroidea Nicholls p. 26 |
2009 | Thalattosauroidea Wu et al. p. 17 fig. 8 |
2020 | Thalattosauroidea Druckenmiller et al. |
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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. †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 bamaolinensis Cheng 2003
†Xinpusaurus kohi Jiang et al. 2004
†Xinpusaurus suni Yin 2000
†Xinpusaurus xingyiensis Li et al. 2016
Diagnosis
Reference | Diagnosis | |
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E. L. Nicholls 1999 | It 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
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Source: o = order, c = class, subp = subphylum | |||||
References: Hendy et al. 2009, Bush and Bambach 2015, Carroll 1988 |
Collections (21 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Smithian | Canada (British Columbia) | Paralonectes merriami (152277) Paralonectes merriami, Agkistrognathus campbelli (105083) | |
Illyrian | Switzerland | Clarazia schinzi (174989) Hescheleria ruebeli (174992) | |
Anisian - Ladinian | Canada (British Columbia) | Thalattosaurus sp. TMP 88.99.21, Paralonectes sp., Thalattosaurus borealis (152278) | |
Ladinian | China (Guizhou) | Xinpusaurus xingyiensis (213309) | |
Longobardian | China (Guizhou) | Xinpusaurus sp. (196508) Xinpusaurus xingyiensis (153372 196509 196510) | |
Carnian | USA (Oregon) | T. Brisbois Member sp. (220464) | |
Carnian | China (Guizhou) | Concavispina biseridens, Xinpusaurus suni, Xinpusaurus kohi (97906) | |
Carnian | USA (California) | Nectosaurus halius (190855) Nectosaurus sp. (152274) Nectosaurus sp., Thalattosaurus sp. (152275) | |
Tuvalian | USA (California) | Nectosaurus sp. (188587) Nectosaurus sp., Nectosaurus halius (136683) Thalattosaurus alexandrae, Nectosaurus halius (136682) | |
Tuvalian | China (Guizhou) | Xinpusaurus suni, Xinpusaurus bamaolinensis (85166) | |
Norian | USA (Alaska) | Gunakadeit joseeae (207961) | |
Norian - Rhaetian | Austria | Thalattosauriformes indet. (152276) |