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Aetosauria

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	Not linked to a GBIF record.
PaleoBioDB ID (PBDB)	38267	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=38267

Rank

unranked clade (PBDB)

Taxonomy (PBDB)

Life : Animalia : Chordata : Reptilia : Eosuchia : Aetosauria

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Triploblastica	Lankester 1877
-	Nephrozoa	Jondelius et al. 2002
-	Deuterostomia	Grobben 1908
phylum	Chordata	Haeckel 1847
subphylum	Vertebrata	Lamarck 1801
superclass	Gnathostomata	Gegenbauer 1874
-	Osteichthyes
-	Sarcopterygii	Romer 1955
subclass	Dipnotetrapodomorpha
subclass	Tetrapodomorpha
-	Tetrapoda
-	Reptiliomorpha	Säve-Söderbergh 1934
-	Anthracosauria	Säve-Söderbergh 1934
-	Batrachosauria
-	Cotylosauria
-	Amniota	Haeckel 1866
-	Sauropsida	Huxley 1864
class	Reptilia	Laurenti 1768
subclass	Eureptilia
-	Romeriida	Gauthier et al. 1988
-	Diapsida
-	Eosuchia
-	Neodiapsida	Benton 1985
-	Sauria	Gauthier 1984
-	Archosauromorpha
-	Crocopoda	Ezcurra 2016
-	Archosauriformes	Gauthier 1986
-	Eucrocopoda	Ezcurra 2016
-	Archosauria
-	Pseudosuchia
-	Suchia	Krebs 1974
suborder	Aetosauria

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Aetosauria	suborder	belongs to Loricata	stated without evidence	Hay, 1902
Aetosauria	suborder	belongs to Parasuchia	stated with evidence	Osborn, 1904
Aetosauria	suborder	belongs to Loricati	stated with evidence	Jaekel, 1910
Aetosauria	suborder	belongs to Loricati	stated without evidence	Jaekel, 1911
Aetosauria	suborder	belongs to Parasuchia	stated with evidence	Lull, 1915
Aetosauria	suborder	belongs to Parasuchia	stated without evidence	Lull, 1917
Aetosauria	suborder	belongs to Pseudosuchia	stated without evidence	Gauthier and Padian, 1985
Aetosauria	suborder	belongs to Thecodontia	implied	Carroll, 1988
Aetosauria	suborder	belongs to Suchia	stated without evidence	Sereno and Arcucci, 1990
Aetosauria	suborder	belongs to Rauisuchiformes	stated without evidence	Parrish, 1993
Aetosauria	suborder	belongs to Suchia	stated with evidence	Long and Murry, 1995
Aetosauria	suborder	belongs to Crocodylotarsi	stated without evidence	Heckert and Lucas, 1998
Aetosauria	suborder	belongs to Suchia	stated without evidence	Weinbaum and Hungerbühler, 2007
Aetosauria	unranked clade	belongs to Pseudosuchia	stated with evidence	Parker, 2007
Aetosauria	unranked clade	belongs to Pseudosuchia	stated without evidence	Schoch, 2007
Aetosauria	unranked clade	belongs to Suchia	stated with evidence	Nesbitt, 2011

Status (PBDB)

extant

Taxon Size (PBDB)

100

Extant Size (PBDB)

3 (3.0%)

First Recorded Appearance

237 - 228 Ma
Late/Upper Triassic

Environment

terrestrial (based on Diapsida)

Motility

actively mobile (based on Osteichthyes)

Diet

herbivore (based on Aetosauria)

Taphonomy

phosphatic (based on Vertebrata)

Primary Reference (PBDB)

R. L. Carroll. 1988. Vertebrate Paleontology and Evolution

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Batrachopodidae family	accepted (GBIF) listed (PBDB)	114	247 Ma Early/Lower Triassic	0 Ma Extant
Aetosauripus ✝ genus	accepted (GBIF) listed (PBDB)	2	252 Ma Permian	237 Ma Middle Triassic
Aetosauroides ✝ genus	accepted (GBIF) listed (PBDB)	6	237 Ma Middle Triassic	237 Ma Middle Triassic
Chilenosuchus ✝ genus	accepted (GBIF) listed (PBDB)	1	237 Ma Middle Triassic	237 Ma Middle Triassic
Hoplitosuchus ✝ genus	accepted (GBIF) listed (PBDB)	2	237 Ma Middle Triassic	237 Ma Middle Triassic
Revueltosaurus ✝ genus	accepted (GBIF) listed (PBDB)	20	237 Ma Middle Triassic	228 Ma Late/Upper Triassic
Stagonolepididae ✝ family	accepted (GBIF) listed (PBDB)	276	237 Ma Middle Triassic	209 Ma Late/Upper Triassic

Synonymy List

Year	Name and Author
1887	Episcoposaurus Cope p. 213
1889	Aetosauria Lydekker
1892	Desmatosuchus haploceras Cope
1892	Episcoposaurus haplocerus Cope p. 129
1902	Aetosauria Hay p. 511
1902	Episcoposaurus Hay p. 511
1902	Episcoposaurus haplocerus Hay p. 511
1904	Aetosauria Osborn p. 100
1910	Aetosauri Jaekel p. 340
1911	Aetosauri Jaekel p. 164
1915	Episcoposaurus Huene p. 492
1915	Aetosauria Lull p. 98
1917	Aetosauria Lull p. 113
1922	Episcoposaurus Huene p. 23
1942	Episcoposaurus Huene p. 243
1985	Aetosauria Gauthier and Padian pp. 187-189 fig. 1
1986	Desmatosuchus haploceros Parrish and Carpenter p. 152

Year	Name and Author
1988	Aetosauria Carroll
1990	Aetosauria Sereno and Arcucci p. 41
1991	Aetosauria Sereno p. 11
1993	Aetosauria Parrish p. 290 fig. 1
1995	Aetosauria Long and Murry p. 66
1995	Desmatosuchus haplocerus Long and Murry p. 89
1998	Aetosauria Heckert and Lucas
1998	Aetosauria Lucas et al.
2000	Aetosauria Heckert and Lucas
2005	Desmatosuchus haplocerus Irmis p. 75
2006	Desmatosuchus haploceras Spielmann et al. pp. 583-584
2007	Aetosauria Parker
2007	Desmatosuchus haplocerus Parker
2007	Aetosauria Schoch
2007	Aetosauria Weinbaum and Hungerbühler p. 141
2011	Aetosauria Nesbitt p. 195 fig. 51

References

Carroll R. L. (1988) , Vertebrate Paleontology and Evolution, 1-698

Cope E. D. A contribution to the history of the Vertebrata of the Trias of North America, Proceedings of the American Philosophical Society 24 126, 209-228

Cope E. D. A contribution to the vertebrate paleontology of Texas, Proceedings of the American Philosophical Society 30 137, 123-131

Hay O. P. (1902) , Bibliography and Catalogue of the Fossil Vertebrata of North America. Bulletin of the United States Geological Survey 179, 1-868

Jaekel O. (1910) Über das System der Reptilien [On the system of reptiles], Zoologische Anzeiger 35, 324-341

Jaekel O. (1911) , Die Wirbeltiere. Eine Übersicht über die Fossilen und Lebenden Formen [The Vertebrates. An Overview of the Fossil and Living Forms], viii-252

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

Gauthier J. A., Padian K. (1985) Phylogenetic, functional, and aerodynamic analyses of the origin of birds and their flight, In M. K. Hecht, J. H. Ostrom, G. Viohl, and P. Wellnhofer (eds.), The Beginnings of Birds: Proceedings of the International Archaeopteryx Conference, Eichstätt 1984. Freunde des Jura-Museums Eichstätt, Eichstätt, 185-197

Parrish J. M., Carpenter K. (1986) A new vertebrate fauna from the Dockum Formation (Late Triassic) of eastern New Mexico, The Beginning of the Age of Dinosaurs: Faunal Change Across the Triassic–Jurassic Boundary. Cambridge University Press, Cambridge, 151-160

Sereno P. C., Arcucci A. B. (1990) The monophyly of crurotarsal archosaurs and the origin of bird and crocodile ankle joints, Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 180 1, 21-52

Sereno P. C. (1991) Basal archosaurs: phylogenetic relationships and functional implications, Journal of Vertebrate Paleontology Memoir 2 11 4, suppl., 1-53

Parrish J. M. (1993) Phylogeny of the Crocodylotarsi, with reference to archosaurian and crurotarsan monophyly, Journal of Vertebrate Paleontology 13 3, 287-308

Long R. A., Murry P. A. (1995) Late Triassic (Carnian and Norian) tetrapods from the southwestern United States, New Mexico Museum of Natural History and Science Bulletin 4, 1-254

Heckert A. B., Lucas S. G. (1998) First occurrence of Aetosaurus (Reptilia: Archosauria) in the Upper Triassic Chinle Group (USA) and its biochronological significance, Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 1998 10, 604-612

Lucas S. G., Heckert A. B., et al (1998) Aetosaurus (Archosauromorpha) from the Upper Triassic of the Newark Supergroup, eastern United States, and its biochronological significance, Palaeontology 41, 1215-1230

Heckert A. B., Lucas S. G. (2000) Taxonomy, phylogeny, biostratigraphy, biochronology, paleobiogeography, and evolution of the Late Triassic Aetosauria (Archosauria: Crurotarsi), Zentralblatt für Geologie und Paläontologie, Teil I 11-12, 1539-1587

Irmis R. B. (2005) The vertebrate fauna of the Upper Triassic Chinle Formation in northern Arizona, In S. J. Nesbitt, W. G. Parker, & R. B. Irmis (eds.), Guidebook to the Triassic Formations of the Colorado Plateau in Northern Arizona: Geology, Paleontology, and History. Mesa Southwest Museum Bulletin 9, 63-88

Spielmann J. A., Hunt A. P., et al (2006) Revision of Redondasuchus (Archosauria: Aetosauria) from the Upper Triassic Redonda Formation, New Mexico, with description of a new species, The Triassic-Jurassic Terrestrial Transition, New Mexico Museum of Natural History and Science Bulletin 37, 583-587

Parker W. G. (2007) Reassessment of the Aetosaur "Desmatosuchus" chamaensis with a reanalysis of the phylogeny of the Aetosauria (Archosauria: Pseudosuchia), Journal of Systematic Palaeontology 5, 41-67

Schoch R. R. (2007) Osteology of the small archosaur Aetosaurus from the Upper Triassic of Germany, Neues Jahrbuch für Paläontologie und Geologie, Abhandlungen 246, 1-35

Weinbaum J. C., Hungerbühler A. (2007) A revision of Poposaurus gracilis (Archosauria: Suchia) based on two new specimens from the Late Triassic of the southwestern U.S.A., Palaeontologische Zeitschrift 81 2, 131-145

Nesbitt S. J. (2011) The early evolution of archosaurs: relationships and the origin of major clades, Bulletin of the American Museum of Natural History 353, 1-292

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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