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Nominosuchus

Description

Nominosuchus is a genus of protosuchian-grade crocodylomorph. It is known from several specimens discovered in ancient lake deposits of the Tithonian-age Upper Jurassic Tsagaantsav Formation, southwestern Mongolia. The type specimen is PIN 4174/4, a partial skull. Nominosuchus was not large; its skull length is estimated at 60 millimetres (2.4 in). It was similar to Shartegosuchus, and is assigned to the same family (Shartegosuchidae). Nominosuchus was described in 1996 by Mikhail Efimov, and the type species is N. matutinus.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4821754https://www.gbif.org/species/4821754
PaleoBioDB ID (PBDB)57398https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=57398
Rankgenus
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Shartegosuchidae : Nominosuchus
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Eosuchia : Shartegosuchidae : Nominosuchus
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
phylumChordataHaeckel 1847
subphylumVertebrataLamarck 1801
superclassGnathostomataGegenbauer 1874
-Osteichthyes
-SarcopterygiiRomer 1955
subclassDipnotetrapodomorpha
subclassTetrapodomorpha
-Tetrapoda
-ReptiliomorphaSäve-Söderbergh 1934
-AnthracosauriaSäve-Söderbergh 1934
-Batrachosauria
-Cotylosauria
-AmniotaHaeckel 1866
-SauropsidaHuxley 1864
classReptiliaLaurenti 1768
subclassEureptilia
-RomeriidaGauthier et al. 1988
-Diapsida
-Eosuchia
-NeodiapsidaBenton 1985
-SauriaGauthier 1984
-Archosauromorpha
-CrocopodaEzcurra 2016
-ArchosauriformesGauthier 1986
-EucrocopodaEzcurra 2016
-Archosauria
-Pseudosuchia
-SuchiaKrebs 1974
-ParacrocodylomorphaParrish 1993
-Loricata
-Crocodylomorpha
suborderCrocodyliformesHay 1930
-ShartegosuchoideaDollman et al. 2018
familyShartegosuchidaeEfimov 1988
genusNominosuchusEfimov 1996
Scientific NameNominosuchus Efimov, 1996
Name Published InMus North Ariz Bull 60
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Nominosuchusgenusbelongs to Protosuchiastated without evidenceEfimov, 1996
Nominosuchusgenusbelongs to Shartegosuchidaestated with evidenceStorrs and Efimov, 2000
Status (PBDB)extinct
Taxon Size (PBDB)3
First Recorded Appearance164 - 157 Ma
Jurassic
Last Recorded Appearance152 - 145 Ma
Late Jurassic
Environmentterrestrial (based on Diapsida)
Motilityactively mobile (based on Osteichthyes)
Dietcarnivore (based on Pseudosuchia)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)M. B. Efimov. 1996. The Jurassic crocodylomorphs of inner Asia. In M. Morales (ed.), The Continental Jurassic. Museum of Northern Arizona Bulletin 60:305-310
Wikipediahttps://en.wikipedia.org/wiki/Nominosuchus

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Nominosuchus arcanus
species
listed (PBDB)1152 Ma
Late Jurassic
152 Ma
Late Jurassic
Nominosuchus matutinus
species
accepted (GBIF)
listed (PBDB)
1152 Ma
Late Jurassic
152 Ma
Late Jurassic

Synonymy List

YearName and Author
1996Nominosuchus Efimov p. 307 fig. 3
2000Nominosuchus Storrs and Efimov p. 403
2010Nominosuchus Wings et al.
2011Nominosuchus Clark
2017Nominosuchus Buscalioni
2018Nominosuchus Dollman et al.

References

Efimov M. B. (1996) The Jurassic crocodylomorphs of inner Asia, The Continental Jurassic. Museum of Northern Arizona Bulletin 60, 305-310
Storrs G. W., Efimov M. B. (2000) Mesozoic crocodyliforms of north-central Eurasia, The Age of Dinosaurs in Russia and Mongolia, 402-419
Wings O., Schwaz-Wings D., et al (2010) Overview of Mesozoic crocodylomorphs from the Junggar Basin, Xinjiang, Northwest China, and description of isolated crocodyliform teeth from the Late Jurassic Liuhuanggoi locality, Palaeobiodiversity and Palaeoenvironments 90, 283-294 doi:10.1007/s12549-010-0033-1
Clark J. M. (2011) A new shartegosuchid crocodyliform from the Upper Jurassic Morrison Formation of western Colorado, Zoological Journal of the Linnean Society 163, S152-S172
Buscalioni A. D. (2017) The Gobiosuchidae in the early evolution of Crocodyliformes, Journal of Vertebrate Paleontology, e1324459:1-21 doi:10.1080/02724634.2017.1324459
Dollman K. N., Clark J. M., et al (2018) Convergent Evolution of a Eusuchian-Type Secondary Palate within Shartegosuchidae, American Museum Novitates 3901, 1-23
Mus North Ariz Bull 60 - via The Interim Register of Marine and Nonmarine Genera
Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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