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Stegomus

Description

Aetosaurus is an extinct genus of archosaur reptile belonging to the order Aetosauria. It is generally considered to be the most primitive aetosaur. Three species are currently recognized: A. ferratus, the type species from Germany and Italy; A. crassicauda from Germany; and A. arcuatus from eastern North America. Additional specimens referred to Aetosaurus have been found from South Africa, the Chinle Group of the southwestern United States, and the Fleming Fjord Formation of Greenland. Specimens of Aetosaurus occur in Norian-age strata.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4817581https://www.gbif.org/species/4817581
PaleoBioDB ID (PBDB)38276https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=38276
Rankgenus
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Stagonolepididae : Stegomus
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Eosuchia : Stagonolepididae : Stegomus
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
-Aetosauria
-Stagonolepididae
genusStegomusMarsh 1896
Scientific NameStegomus Marsh, 1896
Name Published InAmer. J. Sci., (4) 2
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Stegomusgenusbelongs to Belodontiastated without evidenceMarsh, 1896
Stegomusgenusbelongs to Aetosauridaestated without evidenceHay, 1902
Stegomusgenusbelongs to Aetosauridaestated with evidenceLull, 1915
Stegomusgenusbelongs to Aetosauridaestated without evidenceLull, 1917
Stegomusgenusbelongs to Stagonolepidaestated without evidenceHuene, 1922
Stegomusgenusbelongs to Episcoposaurinaestated without evidenceHuene, 1942
Stegomusgenusbelongs to Stagonolepidaestated without evidenceJepsen, 1948
Stegomusgenusbelongs to StagnolepididaeimpliedCarroll, 1988
Stegomusgenussubjective synonym of Aetosaurusstated with evidenceLucas et al., 1998
Stegomusgenussubjective synonym of AetosaurusimpliedHeckert and Lucas, 2000
Stegomusgenusbelongs to Stagonolepidaestated with evidenceDesojo et al., 2013
Status (PBDB)extinct
Taxon Size (PBDB)3
First Recorded Appearance237 - 212 Ma
Late/Upper Triassic
Last Recorded Appearance216 - 209 Ma
Late/Upper Triassic
Environmentterrestrial (based on Diapsida)
Motilityactively mobile (based on Osteichthyes)
Dietherbivore (based on Aetosauria)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)O. C. Marsh. 1896. A new belodont reptile (Stegomus) from the Connecticut river sandstone. American Journal of Science 2:59-62
Wikipediahttps://en.wikipedia.org/wiki/Stegomus

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Stegomus arcuatus
species
accepted (GBIF)
listed (PBDB)
4228 Ma
Late/Upper Triassic
216 Ma
Late/Upper Triassic
Stegomus longipes
species
accepted (GBIF)No associated record in PBDB

Synonymy List

YearName and Author
1896Stegomus Marsh
1902Stegomus Hay p. 511
1915Stegomus Lull p. 98
1917Stegomus Lull p. 110
1917Stegomus Watson p. 180
1922Stegomus Huene p. 23
1942Stegomus Huene p. 243
1948Stegomus Jepsen p. 3
1988Stegomus Carroll
2013Stegomus Desojo et al.

References

Marsh O. C. A new belodont reptile (Stegomus) from the Connecticut river sandstone, American Journal of Science 2, 59-62
Hay O. P. (1902) , Bibliography and Catalogue of the Fossil Vertebrata of North America. Bulletin of the United States Geological Survey 179, 1-868
Lull R. S. (1915) Triassic life of the Connecticut Valley, State of Connecticut State Geological and Natural History Survey Bulletin 24, 1-285
Huene F. v. (1922) The Triassic reptilian order Thecodontia, The American Journal of Science, series 5 4, 22-26
Huene F. v. (1942) Lieferungen 3/4. Pseudosuchia, Saurischia, Rhynchosauridae und Schlussabschnitt [Parts 3/4. Pseudosuchia, Saurischia, Rhynchosauridae, and Conclusions], Die Fossilen Reptilien des Südamerikanischen Gondwanalandes. Ergebnisse der Sauriergrabungen in Südbrasilien 1928/29 [The Fossil Reptiles of South American Gondwanaland. Results of the Dinosaur Expeditions in southern Brazil 1928/29]. C. H. Beck'sche Verlagsbuchhandlung, München, 161-332
Jepsen G. L. (1948) A Triassic armored reptile from New Jersey, State of New Jersey Department of Conservation Miscellaneous Geologic Paper, 1-20
Carroll R. L. (1988) , Vertebrate Paleontology and Evolution, 1-698
Desojo J. B., Heckert A. B., et al (2013) Aetosauria: a clade of armoured pseudosuchians from the Upper Triassic continental beds, Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and their Kin. Geological Society, London, Special Publications 379, 203-239
GBIF/Paleo Database - 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
as per family - via The Interim Register of Marine and Nonmarine Genera
Amer. J. Sci., (4) 2 - 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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