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Opisthotriton ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	Not linked to a GBIF record.
PaleoBioDB ID (PBDB)	37361	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=37361

Rank

genus (PBDB)

Taxonomy (PBDB)

Life : Animalia : Chordata : Osteichthyes : Proteida : Batrachosauroididae : Opisthotriton

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
-	Temnospondyli
-	Lissamphibia
-	Batrachia
-	Caudata
order	Proteida
family	Batrachosauroididae	Auffenberg 1958
genus	Opisthotriton	Auffenberg 1961

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Opisthotriton	genus	belongs to Salamandridae	stated with evidence	Auffenberg, 1961
Opisthotriton	genus	belongs to Desmognathinae	stated with evidence	Estes, 1964
Opisthotriton	genus	belongs to Batrachosauroididae	stated with evidence	Estes, 1969
Opisthotriton	genus	belongs to Batrachosauroididae	stated without evidence	Estes and Berberian, 1970
Opisthotriton	genus	belongs to Batrachosauroididae	stated with evidence	Naylor, 1979
Opisthotriton	genus	belongs to Batrachosauroididae	stated without evidence	Estes, 1981
Opisthotriton	genus	belongs to Batrachosauroididae	implied	Carroll, 1988
Opisthotriton	genus	belongs to Batrachosauroididae	stated without evidence	Sullivan, 1991
Opisthotriton	genus	belongs to Batrachosauroididae	stated with evidence	DeMar, 2013

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

85.8 - 83.5 Ma
Late/Upper Cretaceous

Last Recorded Appearance

56.8 - 55.8 Ma
Paleogene

Environment

brackish,freshwater,terrestrial (based on Tetrapoda)

Motility

actively mobile (based on Temnospondyli)

Diet

carnivore (based on Temnospondyli)

Taphonomy

phosphatic (based on Vertebrata)

Primary Reference (PBDB)

W. Auffenberg. 1961. A new genus of fossil salamander from North America. American Midland Naturalist 66(2):456-465

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Opisthotriton gidleyi ✝ species	listed (PBDB)		1	63.3 Ma Paleocene	63.3 Ma Paleocene
Opisthotriton kayi ✝ species	listed (PBDB)		109	83.6 Ma Late/Upper Cretaceous	61.7 Ma Paleocene

Synonymy List

Year	Name and Author
1961	Opisthotriton Auffenberg p. 458
1964	Opisthotriton Estes p. 81
1969	Opisthotriton Estes p. 231
1970	Opisthotriton Estes and Berberian p. 4
1976	Opisthotriton Estes p. 505
1979	Opisthotriton Naylor p. 19

Year	Name and Author
1981	Opisthotriton Estes
1988	Opisthotriton Carroll
1989	Opisthotriton Bryant p. 31
1991	Opisthotriton Sullivan p. 294
2001	Opisthotriton Peng et al. p. 19
2013	Opisthotriton DeMar, Jr.

References

Auffenberg W. (1961) A new genus of fossil salamander from North America, American Midland Naturalist 66 2, 456-465

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

Estes R. (1969) The Batrachosauroididae and Scapherpetontidae, Late Cretaceous and early Cenozoic salamanders, Copeia 1969 2, 225-234

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

Estes R. (1976) Middle Paleocene lower vertebrates from the Tongue River Formation, southeastern Montana, Journal of Paleontology 50 3, 500-520

Naylor B. G. (1979) The Cretaceous salamander Prodesmodon (Amphibia: Caudata), Herpetologica 35 1, 11-20

Estes R. (1981) , Handbuch der Paläoherpetologie/Encyclopedia of Paleoherpetology. Part 2. Gymnophiona, Caudata. Gustav Fischer Verlag, Stuttgart, xv-115

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

Bryant L. J. (1989) Non-dinosaurian lower vertebrates across the Cretaceous-Tertiary boundary in northeastern Montana, University of California Publications in Geological Sciences 134, 1-107

Sullivan R. M. (1991) Paleocene Caudata and Squamata from Gidley and Silberling quarries, Montana, Journal of Vertebrate Paleontology 11 3, 293-301

Peng J., Russell A. P., et al (2001) Vertebrate microsite assemblages (exclusive of mammals) from the Foremost and Oldman Formations of the Judith River Group (Campanian) of southeastern Alberta: an illustrated guide, Provincial Museum of Alberta, Natural History Occasional Paper 25, 1-54

DeMar, Jr. D. G. (2013) A new fossil salamander (Caudata, Proteidae) from the Upper Cretaceous (Maastrichtian) Hell Creek Formation, Montana, U.S.A., Journal of Vertebrate Paleontology 33 3, 588-598

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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