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Cornwallius

Description

Cornwallius is an extinct herbivorous marine mammal of the family Desmostylidae. Cornwallius lived along the North American Pacific Coast from the Early Oligocene (Chattian) through the Oligocene (28.4 mya—20.6 Mya) and existing for approximately 7.8 million years.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4831537https://www.gbif.org/species/4831537
PaleoBioDB ID (PBDB)36957https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=36957
Rankgenus
Taxonomy (GBIF)Life : Animalia : Chordata : Mammalia : Desmostylidae : Cornwallius
Taxonomy (PBDB)Life : Animalia : Chordata : Mammalia : Desmostyloidea : Desmostylidae : Cornwallius
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
-SynapsidaOsborn 1903
-Therapsida
infraorderCynodontia
-EpicynodontiaHopson and Kitching 2001
infraorderEucynodontiaKemp 1982
-ProbainognathiaHopson 1990
-MammaliamorphaRowe 1988
-MammaliaformesRowe 1988
classMammaliaLinnaeus 1758
subclassTribosphenida
infraclassEutheria
-PlacentaliaOwen 1837
orderPerissodactyla
orderDesmostyliaReinhart 1953
orderDesmostyloideaAbel 1933
familyDesmostylidaeOsborn 1905
genusCornwalliusHay 1924
Scientific NameCornwallius Hay, 1924
Name Published InPan Amer. Geol., 39
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Cornwalliusgenusbelongs to Desmostylidaestated without evidenceHay, 1930
Cornwalliusgenusbelongs to Desmostylidaestated with evidenceVanderHoof, 1937
Cornwalliusgenusbelongs to Desmostylidaestated without evidenceKretzoi, 1941
Cornwalliusgenusbelongs to Cornwalliidaestated without evidenceShikama, 1966
Cornwalliusgenusbelongs to Desmostyliastated without evidenceDomning et al., 1986
Cornwalliusgenusbelongs to DesmostylidaeimpliedCarroll, 1988
Cornwalliusgenusbelongs to Desmostylidaestated without evidenceInuzuka et al., 1995
Cornwalliusgenusbelongs to Desmostyliastated with evidenceDomning, 1996
Cornwalliusgenusbelongs to Desmostylidaestated without evidenceMcKenna and Bell, 1997
Cornwalliusgenusbelongs to Desmostyliasecond handSepkoski, 2002
Cornwalliusgenusbelongs to Desmostyliastated with evidenceDomning, 2008
Cornwalliusgenusbelongs to Desmostylidaestated with evidenceBeatty, 2009
Cornwalliusgenusbelongs to Desmostyliastated without evidenceBerta, 2017
Cornwalliusgenusbelongs to Desmostylidaestated without evidenceDomning, 2018
Cornwalliusgenusbelongs to Desmostylidaestated with evidenceMatsui and Tsuihiji, 2019
Status (PBDB)extinct
Taxon Size (PBDB)2
First Recorded Appearance30.8 - 23.0 Ma
Cenozoic
Last Recorded Appearance28.1 - 20.4 Ma
Cenozoic
Environmentcoastal (based on Desmostylia)
Motilityactively mobile (based on Desmostylia)
Dietherbivore (based on Desmostylia)
Reproductionviviparous (based on Desmostylia)
Ontogenymodification of parts (based on Desmostylia)
Taphonomyhydroxylapatite (based on Desmostylia)
Primary Reference (PBDB)O. P. Hay. 1923. Characteristics of Sundry Fossil Vertebrates. Pan-American Geologist 39:101-120
Wikipediahttps://en.wikipedia.org/wiki/Cornwallius

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Desmostylus sookensis
species
accepted (GBIF)
listed (PBDB)
930.8 Ma
Oligocene
28.1 Ma
Oligocene

Synonymy List

YearName and Author
1923Cornwallius Hay p. 107
1930Cornwallius Hay p. 654
1937Cornwallius VanderHoof p. 191
1941Cornwallius Kretzoi p. 155
1942Cornwallius VanderHoof p. 301
1959Cornwallius Reinhart p. 66
1966Cornwallius Shikama p. 155
1986Cornwallius Domning et al. p. 36 figs. Fig. 22
1988Cornwallius Carroll
1995Cornwallius Inuzuka et al. p. 524
YearName and Author
1996Cornwallius Domning p. 324
1997Cornwallius McKenna and Bell p. 375
2000Cornwallius Inuzuka p. 93
2002Cornwallius Sepkoski, Jr.
2008Cornwallius Domning p. 642
2009Cornwallius Beatty
2017Cornwallius Berta p. 171
2018Cornwallius Domning p. 251
2019Cornwallius Matsui and Tsuihiji p. 11

References

Hay O. P. (1923) Characteristics of Sundry Fossil Vertebrates, Pan-American Geologist 39, 101-120
Hay O. P. (1930) Second Bibliography and Catalogue of the Fossil Vertebrata of North America, Carnegie Institution of Washington 390 II, 1-1074
VanderHoof V. L. (1937) A study of the Miocene sirenian Desmostylus, University of California Publications in Geological Sciences 24 8, 169-262
Kretzoi M. (1941) Sirenavus hungaricus N. G. N. Sp., ein Neuer Prorastomide aus dem Mitteleozan (Lutetium) von Felsogallia in Ungarn, Annales Musei Nationalis Hungaricic Pars Mineralogica, Geologica et Palaeontologica 34, 146-156
VanderHoof V. L. (1942) An occurrence of the Tertiary marine mammal Cornwallius in lower California, American Journal of Science 240, 298-301
Reinhart R. H. (1959) A review of the Sirenia and Desmostylia, University of California Publications in Geological Sciences 36 1, 1-146
Shikama T. (1966) Postcranial skeletons of Japanese Desmostylia, Palaeontological Society of Japan Special Papers 12, 1-202
Domning D. P., Ray C. E., et al (1986) Two new Oligocene desmostylians and a discussion of Tethytherian systematics, Smithsonian Contributions to Paleobiology 59, 1-56
Carroll R. L. (1988) , Vertebrate Paleontology and Evolution, 1-698
Domning D. P. (1996) Bibliography and Index of the Sirenia and Desmostylia, Smithsonian Contributions to Paleobiology 80, 1-611
McKenna M. C., Bell S. K. (1997) , Classification of Mammals Above the Species Level, 1-640
Inuzuka N. (2000) Primitive late Oligocene desmostylians from Japan and Phylogeny of the Desmostylia, Bulletin of the Ashoro Museum of Paleontology 1, 91-123
Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
Domning D. P. (2008) Desmostylia, Evolution of Tertiary Mammals of North America, Volume II, 640-645
Beatty B. L. (2009) New material of Cornwallius sookensis (Mammalia: Desmostylia) from the Yaquina Formation of Oregon, Journal of Vertebrate Paleontology 29 3, 894-909
Berta A. (2017) , The Rise of Marine Mammals: 50 Million Years of Evolution, 1-198
Matsui K., Tsuihiji T. (2019) The phylogeny of desmostylians revisited: proposal of new clades based on robust phylogenetic hypotheses, PeerJ 7, e7430 doi:10.7717/peerj.7430
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
Sepkoski, J. J., Jr. (2002). A compendium of fossil marine animal genera. Bulletins of American Paleontology. 363, 1-560. - via The Interim Register of Marine and Nonmarine Genera
Domning, 2010 - via The Interim Register of Marine and Nonmarine Genera
Pan Amer. Geol., 39 - 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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