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Eosuchia

Photos

Photo Gallery

Phytosauria

Colorado, USA

Phytosauria

Colorado, USA

Phytosauria

Colorado, USA

Phytosauria

Colorado, USA

Phytosauria

Colorado, USA

Phytosauria

Colorado, USA

Phytosauria

Colorado, USA

Phytosauria

Colorado, USA

Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	Not linked to a GBIF record.
PaleoBioDB ID (PBDB)	37795	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=37795

Rank

unranked clade (PBDB)

Taxonomy (PBDB)

Life : Animalia : Chordata : Reptilia : Eosuchia

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
suborder	Eosuchia

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Eosuchia	suborder	belongs to Thecodontia	stated with evidence	Broom, 1914
Eosuchia	order	belongs to Prodiapsida	stated without evidence	Roxo, 1937
Eosuchia	suborder	belongs to Thecodontia	stated with evidence	Kuhn, 1946
Eosuchia	order	belongs to Archosauromorpha	stated without evidence	Huene, 1954
Eosuchia	order	belongs to Lepidosauria	stated without evidence	Haughton and Brink, 1954
Eosuchia	suborder	belongs to Reptilia	stated without evidence	Russell, 1956
Eosuchia	order	belongs to Reptilia	stated with evidence	Estes, 1964
Eosuchia	order	belongs to Lepidosauria	stated with evidence	Kuhn, 1966
Eosuchia	order	belongs to Lepidosauria	stated without evidence	Olson, 1966
Eosuchia	order	belongs to Reptilia	stated with evidence	Estes and Berberian, 1970
Eosuchia	order	belongs to Diapsida	stated without evidence	Reisz, 1977
Eosuchia	order	belongs to Reptilia	stated without evidence	Harris and Carroll, 1977
Eosuchia	infraclass	belongs to Diapsida	stated with evidence	Evans, 1980
Eosuchia	suborder	belongs to Crocodylia	implied	Carroll, 1988
Eosuchia	suborder	belongs to Lepidosauromorpha	implied	Carroll, 1988
Eosuchia	unranked clade	belongs to Diapsida	stated with evidence	Laurin, 1991

Status (PBDB)

extant

Taxon Size (PBDB)

14,716

Extant Size (PBDB)

4,201 (29%)

First Recorded Appearance

299 - 296 Ma
Paleozoic

Environment

terrestrial (based on Diapsida)

Motility

actively mobile (based on Osteichthyes)

Taphonomy

phosphatic (based on Vertebrata)

Primary Reference (PBDB)

R. Broom. 1914. A new Thecodont Reptile. Proceedings of the Zoological Society of London 1914:1072-1077

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Acerosodontosauridae family	accepted (GBIF) listed (PBDB)
Varanopidae ✝ family	accepted (GBIF) listed (PBDB)
Noteosuchidae ✝ family	accepted (GBIF) listed (PBDB)
Palaeagamidae ✝ family	listed (PBDB)
Aenigmasaurus ✝ genus	accepted (GBIF) listed (PBDB)	1	252 Ma Permian	252 Ma Permian
Avicephala ✝ unranked clade	listed (PBDB)	5	260 Ma Permian	242 Ma Middle Triassic
Neodiapsida unranked clade	listed (PBDB)	46,074	299 Ma Carboniferous	0 Ma Extant

Synonymy List

Year	Name and Author
1914	Eosuchia Broom pp. 1072, 1075
1937	Eosuchia Roxo p. 44
1946	Eosuchia Kuhn p. 63
1954	Eosuchia Haughton and Brink p. 3
1954	Eosuchia Huene p. 41
1956	Eosuchia Russell p. 4
1964	Eosuchia Estes p. 99
1964	Eosuchia Kuhn p. 310

Year	Name and Author
1966	Eosuchia Kuhn p. 34
1966	Eosuchia Olson p. 301
1970	Eosuchia Estes and Berberian p. 4
1977	Eosuchia Harris and Carroll p. 141
1977	Eosuchia Reisz p. 1093
1980	Eosuchia Evans p. 204
1988	Eosuchia Carroll
1991	Eosuchia Laurin pp. 83, 84 fig. 11

References

Broom R. (1914) A new Thecodont Reptile, Proceedings of the Zoological Society of London 1914, 1072-1077

Kuhn O. (1946) Das System der fossilen und rezenten Amphibien und Reptilien [The system of fossil and recent amphibians and reptiles], Bericht der Naturforschenden Gesellschaft in Bamberg 29, 49-67

Haughton S. H., Brink A. S. (1954) A bibliographical list of Reptilia from the Karroo Beds of South Africa, Palaeontologia Africana 2, 1-187

Huene F. v. (1954) , Die Saurierwelt und ihre Geschichtlichen Zusammenhänge [The World of Reptiles and the History of Their Interrelationships]. 2nd, revised edition, 1-66

Russell L. S. (1956) The Cretaceous reptiles Champsosaurus natator Parks, National Museum of Canada Bulletin 145, 1-51

Estes R. (1964) Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming, University of California Publications in Geological Sciences 49, 1-187

Kuhn O. (1964) Ungelöste Probleme der Stammesgeschichte der Amphibien und Reptilien [Unsolved problems of the phylogeny of amphibians and reptiles], Jahreshefte des Vereins für vaterländische Naturkunde in Württemberg 118/119, 293-325

Kuhn O. W. M. (1966) , Die Reptilien. System und Stammesgeschichte [The Reptiles. Systematics and Phylogeny.], 1-154

Olson E. C. (1966) Community evolution and the origin of mammals, Ecology 47 2, 291-302

Estes R., Berberian P. (1970) Paleoecology of a Late Cretaceous vertebrate community from Montana, Breviora 343, 1-35

Harris J. M., Carroll R. L. (1977) Kenyasaurus, a New Eosuchian Reptile from the Early Triassic of Kenya, Journal of Paleontology 51 1, 139-149

Reisz R. R. (1977) Petrolacosaurus, the Oldest Known Diapsid Reptile, Science 196, 1091-1093

Evans S. E. (1980) The skull of a new eosuchian reptile from the Lower Jurassic of South Wales, Zoological Journal of the Linnean Society 70, 203-264

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

Laurin M. (1991) The osteology of a Lower Permian eosuchian from Texas and a review of diapsid phylogeny, Zoological Journal of the Linnean Society 101 1, 59-95

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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