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Thryptacodon pseudarctos

Mammalia - Procreodi - Arctocyonidae

Taxonomy
Thryptacodon pseudarctos was named by Simpson (1928). Its type specimen is A. M. No. 22176, a tooth (isolated [upper] M2 right), and it is a 3D body fossil. Its type locality is Bear Creek, which is in a Clarkforkian terrestrial horizon in the Fort Union Formation of Montana.

It was synonymized subjectively with Thryptacodon antiquus by Van Valen and Sloan (1966), Van Valen (1978).

Synonymy list
YearName and author
1928Thryptacodon pseudarctos Simpson p. 10
1930Thryptacodon pseudarctos Hay p. 462
1978Thryptacodon pseudarctos Gingerich
1981Thryptacodon pseudarctos Rose
1982Thryptacodon pseudarctos Winterfeld

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
RankNameAuthor
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
orderProcreodiMatthew 1915
familyArctocyonidaeMurray 1866
genusThryptacodon
speciespseudarctos

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Thryptacodon pseudarctos Simpson 1928
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: omnivoref
Reproduction: viviparoussubc
Created: 2005-08-31 13:54:39
Modified: 2011-04-24 18:06:44
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Ji et al. 2002, Archibald 1998, Lillegraven 1979, Carroll 1988

Age range: base of the Tiffanian to the top of the Clarkforkian or 60.90000 to 54.90000 Ma

Collections (20 total)


Time interval Ma Country or state Original ID and collection number
Tiffanian60.9 - 56.2USA (Wyoming) Thryptacodon pseudarctos (15057 53059 190403 190405 190410 190414 190418 190424 190445 190446 190468 190475 190493) Thryptacodon sp. (15049)
Clarkforkian56.2 - 54.9USA (Montana) Thryptacodon pseudarctos (type locality: 15079)
Clarkforkian56.2 - 54.9USA (Wyoming) Thryptacodon pseudarctos (15028 15089 15183 190485) Thryptacodon sp. (15075)