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Borophagus diversidens

Mammalia - Carnivora - Canidae

Taxonomy
Borophagus diversidens was named by Cope (1892) [genotype; also, but incorrectly said to be 1893 see Matthew 1902a for description of type]. Its type specimen is UCMP V-8139, a mandible (fragment of a lower jaw, with two premolars preserved and the root of a third), and it is not a trace fossil.

It was recombined as Dinocyon (Borophagus) diversidens by Matthew (1902); it was recombined as Dinocyon diversidens by Matthew (1902); it was recombined as Hyaenarctos diversidens by Frick (1926); it was considered a nomen dubium by Matthew (1918).

Synonyms
Synonymy list
YearName and author
1892Borophagus diversidens Cope
1893Borophagus diversidens Cope p. 54
1893Felis hillanus Cope p. 55
1902Dinocyon diversidens Matthew
1902Dinocyon (Borophagus) diversidens Matthew p. 290
1903Hyaenognathus pachyodon Merriam p. 278 figs. Pl. 28, Figs. 1 and 2
1903Porthocyon dubius Merriam p. 283 figs. Pl. 29 and P. 30, Fig 1
1910Hyaenognathus matthewi Freudenberg
1926Hyaenarctos diversidens Frick
1930Borophagus diversidens Matthew and Stirton
1931Hyaenognathus dubius VanderHoof
1932Hyaenognathus solus Stock
1933Borophagus diversidens Stirton and VanderHoof
1936Borophagus matthewi Vanderhoof
1936Borophagus pachyodon Vanderhoof
1936Borophagus solus Vanderhoof
1937Borophagus solus Schultz
1937Osteoborus hillianus Schultz
1937Osteoborus hillianus Vanderhoof
1939Borophagus pachyodon Stirton
1940Borophagus diversidens VanderHoof and Gregory
1940Borophagus matthewi VanderHoof and Gregory
1940Borophagus pachyodon VanderHoof and Gregory
1940Borophagus solus VanderHoof and Gregory
1979Borophagus dubius Richey
1979Borophagus matthewi Richey
1979Borophagus pachyodon Richey
1979Borophagus solus Richey
1980Borophagus diversidens Kurten and Anderson p. 166
1998Borophagus diversidens Munthe
1998Borophagus pachyodon Munthe
1999Borophagus diversidens Wang et al. p. 301
2016Borophagus diversidens Tseng and Geisler p. 2 figs. Table 1

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
RankNameAuthor
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
Laurasiatheria
Scrotifera
Ferae()
CarnivoramorphaWyss and Flynn 1993
CarnivoraformesFlynn et al.
orderCarnivoraBowditch 1821
suborderCaniformiaKretzoi 1943
superfamilyCanoideaSimpson 1931
familyCanidaeFischer 1817
subfamilyBorophaginaeSimpson 1945
tribeBorophaginiSimpson 1945
subtribeBorophagina
genusBorophagusCope 1892
speciesdiversidensCope 1892

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.

Diagnosis
ReferenceDiagnosis
J. C. Merriam 1903 (Porthocyon dubius)Muzzle short, forehead and sagittal crest high . Brain case smull and narrow, outer walls sharply from the crest. Wings of the premaxillaries reaching back to the blunt anterior ends of the frontals. Palate very broad, with two pairs of large posterior palatine foramina. Posterior nasal openings not reaching forward to the end of the molar series. Dentition 3?/ 1/, 4/, 2/. I3 very large. Premolars crowded. Sectorial massive, without deuterocone. Metacone and heel of M1 small. M2 reduced.