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Triisodon quivirensis

Description

Triisodon is a genus of extinct mesonychian mammal that existed during the Early Paleocene of New Mexico, North America. The genus was named by Edward Drinker Cope in 1881 as a member of the Acreodi, a now invalid taxon that encompassed both creodonts and mesonychians. The premolar teeth have three points, hence the generic name (tri=three, don=tooth). Cope described the type specimen of T. quivirensis as "about the size of a wolf." A smaller species has also been identified from the same region. Since material from this genus is incomplete, the exact size of adults and whether they showed sexual dimorphism or regional variations in size is unknown.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4974032https://www.gbif.org/species/4974032
PaleoBioDB ID (PBDB)52470https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=52470
Rankspecies
Taxonomy (GBIF)Life : Animalia : Chordata : Mammalia : Triisiodontidae : Triisodon : Triisodon quivirensis
Taxonomy (PBDB)Life : Animalia : Chordata : Mammalia : Acreodi : Triisodontidae : Triisodon : Triisodon quivirensis
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
orderAcreodiMatthew 1909
familyTriisodontidaeScott 1892
genusTriisodonCope 1881
speciesTriisodon quivirensisCope 1881
Generic NameTriisodon
Scientific NameTriisodon quivirensis Cope, 1881
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Triisodon quivirensisspeciesbelongs to Triisodonstated with evidenceCope, 1881
Triisodon quivirensisspeciesbelongs to Triisodonstated without evidenceHay, 1902
Status (PBDB)extinct
Taxon Size (PBDB)1
First Recorded Appearance63.3 - 61.7 Ma
Paleocene
Last Recorded Appearance63.3 - 61.7 Ma
Paleocene
Environmentterrestrial (based on Eutheria)
Motilityactively mobile (based on Osteichthyes)
Dietomnivore (based on Triisodontidae)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)E. D. Cope. 1881. The temporary dentition of a new creodont. The American Naturalist 15:667-669
Wikipediahttps://en.wikipedia.org/wiki/Triisodon_quivirensis

Fossil Distribution

Obsolete Names

NameSourceTaxon RankTaxonomy
Sarcothraustes antiquus (Cope, 1882)GBIFspeciesAnimalia : Chordata : Mammalia : Triisiodontidae : Triisodon : Sarcothraustes antiquus
Triisodon conidens Cope, 1882GBIFspeciesAnimalia : Chordata : Mammalia : Triisiodontidae : Triisodon : Triisodon conidens
Mioclaenus antiquus (Cope, 1882)GBIFspeciesAnimalia : Chordata : Mammalia : Triisiodontidae : Triisodon : Mioclaenus antiquus
Triisodon antiquus (Cope, 1882)GBIFspeciesAnimalia : Chordata : Mammalia : Triisiodontidae : Triisodon : Triisodon antiquus

Synonymy List

YearName and Author
1881Triisodon quivirensis Cope p. 485
1882Triisodon conidens Cope
1882Sarcothraustes antiquus Cope p. 193
1888Mioclaenus antiquus Cope
1892Triisodon quivirensis Scott p. 301
1892Sarcothraustes antiquus Scott p. 303
1895Sarcothraustes antiquus Osborn and Earle
YearName and Author
1897Sarcothraustes antiquus Matthew
1902Sarcothraustes antiquus Hay p. 748
1902Triisodon quivirensis Hay p. 748
1921Triisodon antiquus Matthew and Granger
1937Triisodon antiquus Matthew
1981Triisodon antiquus Tomida

References

Cope E. D. The temporary dentition of a new creodont, The American Naturalist 15, 667-669
Cope E. D. On some Mammalia of the lowest Eocene beds of New Mexico, Palaeontological Bulletin 33, 484-495
Cope E. D. Contributions to the history of the Vertebrata of the lower Eocene of Wyoming and New Mexico, made during 1881, Proceedings of the American Philosophical Society 20 111, 139-197
Scott W. B. A revision of the North American Creodonta with notes on some genera which have been referred to that group, Proceedings of the Academy of Natural Sciences, Philadelphia 44, 291-323
Hay O. P. (1902) , Bibliography and Catalogue of the Fossil Vertebrata of North America. Bulletin of the United States Geological Survey 179, 1-868
Matthew W. D., Granger W. (1921) New genera of Paleocene mammals, American Museum Novitates 13, 1-7
Matthew W. D. (1937) Paleocene faunas of the San Juan Basin, New Mexico, Transactions of the American Philosophical Society 30, 1-510
Tomida Y. (1981) Dragonian fossils from the San Juan Basin and status of the "Dragonian" Land Mammal "age", Advances in San Juan Basin Paleontology, 222-241
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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