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{{Short description|Extinct genus of reptiles}}
{{italictitle}}{{speciesbox
{{speciesbox
| name = ''Corosaurus''
| image = Triassic marine vertebrate apex predators.png
| image_caption = ''Corosaurus'' (12) and other Early Triassic marine predators
| fossil_range = [[Early Triassic]], {{fossil_range|247.4|245}}
| fossil_range = [[Early Triassic]], {{fossil_range|247.4|245}}
| display_parents = 2
| display_parents = 3
| genus = Corosaurus
| genus = Corosaurus
| grandparent_authority = [[Oskar Kuhn|Kuhn]], [[1961 in paleontology|1961]]
| grandparent_authority = [[Oskar Kuhn|Kuhn]], [[1961 in paleontology|1961]]
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}}
}}


'''''Corosaurus''''' is an [[extinct]] [[genus]] of [[pistosauroid]] known from [[Wyoming]] of the [[USA]].<ref name=Corosaurus>{{cite journal |authors=Ermine Cowles Case |year=1936 |title=A nothosaur from the Triassic of Wyoming |journal= University of Michigan Contributions from the Museum of Paleontology |volume=5 |issue=1 |pages=1-36 }}</ref><ref name=Corosaurus-phylo>{{cite journal |authors=Olivier Rieppel |year=1998 |title=''Corosaurus alcovensis'' Case and the phylogenetic interrelationships of Triassic stem-group Sauropterygia |journal=Zoological Journal of the Linnean Society |volume=124 |issue=1 |pages=1–41 |doi=10.1111/j.1096-3642.1998.tb00568.x }}</ref>
'''''Corosaurus''''' is an [[extinct]] [[genus]] of [[pistosauroid]] known from [[Wyoming]] of the United States.<ref name=Corosaurus>{{cite journal |author=Ermine Cowles Case |year=1936 |title=A nothosaur from the Triassic of Wyoming |journal= University of Michigan Contributions from the Museum of Paleontology |volume=5 |issue=1 |pages=1–36 }}</ref><ref name=Corosaurus-phylo>{{cite journal |author=Olivier Rieppel |year=1998 |title=''Corosaurus alcovensis'' Case and the phylogenetic interrelationships of Triassic stem-group Sauropterygia |journal=Zoological Journal of the Linnean Society |volume=124 |issue=1 |pages=1–41 |doi=10.1111/j.1096-3642.1998.tb00568.x |doi-access=free }}</ref> The holotype measured about {{cvt|1.65|m|ft}} long, while larger specimens would have belonged to individuals measuring more than {{cvt|4|m|ft}} long.<ref>{{cite journal |last1=Scheyer |first1=Torsten M. |last2=Romano |first2=Carlo |last3=Jenks |first3=Jim |last4=Bucher |first4=Hugo |title=Early Triassic Marine Biotic Recovery: The Predators' Perspective |journal=PLOS ONE |date=19 March 2014 |volume=9 |issue=3 |pages=e88987 |doi=10.1371/journal.pone.0088987 |pmid=24647136 |pmc=3960099 |bibcode=2014PLoSO...988987S |doi-access=free }}</ref>


==History of discovery==
==Description==
''Corosaurus'' is known from the [[holotype]] [[University of Wyoming|UW]]&nbsp;5485, a partial [[skeleton]] which includes the [[skull]].<ref name=Corosaurus/> Later, the referred specimens [[Yale Peabody Museum of Natural History|YPM]]&nbsp;41030-41068, [[Field Museum of Natural History|FMNH]]&nbsp;PR&nbsp;135, FMNH&nbsp;PR&nbsp;1368-1369, FMNH&nbsp;PR&nbsp;242-246 and FMNH&nbsp;PR&nbsp;1382-1383 were described by Glenn William Storrs in 1991. All specimens were collected in Jackson Canyon, [[Natrona County]], from the [[Chugwater Group]] of the [[Alcova Limestone Formation]], dating to the late [[Olenekian]] stage of the late [[Early Triassic]], about 247.4-245 [[mya (unit)|million years ago]].<ref name=Corosaurus-a&r>{{cite journal |authors=Glenn William Storrs |year=1991 |title=Anatomy and Relationships of ''Corosaurus alcovensis'' (Diapsida: Sauropterygia) and the Triassic Alcova Limestone of Wyoming |journal=Bulletin of the Peabody Museum of Natural History Yale University |volume=44 |pages=1-151 }}</ref> After a revision of the holotype and referred material of ''Corosaurus'', Olivier Rieppel found ''Corosaurus'' to be the sister-taxon to a clade comprising ''[[Cymatosaurus]]'', ''[[Pistosaurus]]'' and [[Plesiosauria]].<ref name=Corosaurus-phylo/>
''Corosaurus'' is known from the [[holotype]] [[University of Wyoming|UW]]&nbsp;5485, a partial [[skeleton]] which includes the [[skull]].<ref name=Corosaurus/> Later, the referred specimens [[Peabody Museum of Natural History|YPM]]&nbsp;41030-41068, [[Field Museum of Natural History|FMNH]]&nbsp;PR&nbsp;135, FMNH&nbsp;PR&nbsp;1368-1369, FMNH&nbsp;PR&nbsp;242-246 and FMNH&nbsp;PR&nbsp;1382-1383 were described by Glenn William Storrs in 1991. All specimens were collected in Jackson Canyon, [[Natrona County]], from the [[Chugwater Group]] of the [[Alcova Limestone Formation]], dating to the late [[Olenekian]] stage of the late [[Early Triassic]], about 247.4-245 [[mya (unit)|million years ago]].<ref name=Corosaurus-a&r>{{cite journal |author=Glenn William Storrs |year=1991 |title=Anatomy and Relationships of ''Corosaurus alcovensis'' (Diapsida: Sauropterygia) and the Triassic Alcova Limestone of Wyoming |journal=Bulletin of the Peabody Museum of Natural History Yale University |volume=44 |pages=1–151 }}</ref>


==Etymology==
===Etymology===
''Corosaurus'' was first named by [[Ermine Cowles Case]] in [[1936 in paleontology|1936]] and the [[type species]] is ''Corosaurus alcovensis''. The [[specific name (zoology)|specific name]] is derived from the name of the Alcova Limestone Formation, in which the holotype was found.<ref name=Corosaurus/> ''Corosaurus'' was placed in its own [[family (biology)|family]], '''Corosauridae''', which named by [[Oskar Kuhn]], in 1961.<ref name=Corosaurus-a&r/>
''Corosaurus'' was first named by [[Ermine Cowles Case]] in [[1936 in paleontology|1936]] and the [[type species]] is ''Corosaurus alcovensis''. The [[specific name (zoology)|specific name]] is derived from the name of the Alcova Limestone Formation, in which the holotype was found.<ref name=Corosaurus/>

==Classification==
''Corosaurus'' was placed in its own [[family (biology)|family]], '''Corosauridae''', which named by [[Oskar Kuhn]], in 1961.<ref name=Corosaurus-a&r/> After a revision of the holotype and referred material of ''Corosaurus'', Olivier Rieppel found ''Corosaurus'' to be the sister-taxon to a clade comprising ''[[Cymatosaurus]]'', ''[[Pistosaurus]]'' and [[Plesiosauria]].<ref name=Corosaurus-phylo/>


==References==
==References==
{{Reflist}}
{{Reflist}}
{{portal|Paleontology}}
{{Portal|Paleontology}}
{{Sauropterygia|E.}}
{{Taxonbar|from=Q5172332}}


[[Category:Fossil taxa described in 1936]]
[[Category:Fossil taxa described in 1936]]
[[Category:Prehistoric reptiles of North America]]
[[Category:Early Triassic reptiles of North America]]
[[Category:Sauropterygia]]
[[Category:Pistosaurs]]
[[Category:Triassic reptiles]]
[[Category:Triassic sauropterygians]]
[[Category:Sauropterygian genera]]



{{paleo-reptile-stub}}
{{triassic-reptile-stub}}

Latest revision as of 23:10, 19 August 2023

Corosaurus
Temporal range: Early Triassic, 247.4–245 Ma
↓
Corosaurus (12) and other Early Triassic marine predators
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: †Sauropterygia
Clade: †Pistosauroidea
Family: †Corosauridae
Kuhn, 1961
Genus: †Corosaurus
Case, 1936
Species:
†C. alcovensis
Binomial name
†Corosaurus alcovensis
Case, 1936

Corosaurus is an extinct genus of pistosauroid known from Wyoming of the United States.[1][2] The holotype measured about 1.65 m (5.4 ft) long, while larger specimens would have belonged to individuals measuring more than 4 m (13 ft) long.[3]

History of discovery

[edit]

Corosaurus is known from the holotype UW 5485, a partial skeleton which includes the skull.[1] Later, the referred specimens YPM 41030-41068, FMNH PR 135, FMNH PR 1368-1369, FMNH PR 242-246 and FMNH PR 1382-1383 were described by Glenn William Storrs in 1991. All specimens were collected in Jackson Canyon, Natrona County, from the Chugwater Group of the Alcova Limestone Formation, dating to the late Olenekian stage of the late Early Triassic, about 247.4-245 million years ago.[4]

Etymology

[edit]

Corosaurus was first named by Ermine Cowles Case in 1936 and the type species is Corosaurus alcovensis. The specific name is derived from the name of the Alcova Limestone Formation, in which the holotype was found.[1]

Classification

[edit]

Corosaurus was placed in its own family, Corosauridae, which named by Oskar Kuhn, in 1961.[4] After a revision of the holotype and referred material of Corosaurus, Olivier Rieppel found Corosaurus to be the sister-taxon to a clade comprising Cymatosaurus, Pistosaurus and Plesiosauria.[2]

References

[edit]
  1. ^ a b c Ermine Cowles Case (1936). "A nothosaur from the Triassic of Wyoming". University of Michigan Contributions from the Museum of Paleontology. 5 (1): 1–36.
  2. ^ a b Olivier Rieppel (1998). "Corosaurus alcovensis Case and the phylogenetic interrelationships of Triassic stem-group Sauropterygia". Zoological Journal of the Linnean Society. 124 (1): 1–41. doi:10.1111/j.1096-3642.1998.tb00568.x.
  3. ^ Scheyer, Torsten M.; Romano, Carlo; Jenks, Jim; Bucher, Hugo (19 March 2014). "Early Triassic Marine Biotic Recovery: The Predators' Perspective". PLOS ONE. 9 (3): e88987. Bibcode:2014PLoSO...988987S. doi:10.1371/journal.pone.0088987. PMC 3960099. PMID 24647136.
  4. ^ a b Glenn William Storrs (1991). "Anatomy and Relationships of Corosaurus alcovensis (Diapsida: Sauropterygia) and the Triassic Alcova Limestone of Wyoming". Bulletin of the Peabody Museum of Natural History Yale University. 44: 1–151.


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