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Plithocyon ursinus

Mammalia - Carnivora - Ursidae

Taxonomy
Canis ursinus was named by Cope (1875).

It was recombined as Amphicyon ursinus by Cope (1879) and Matthew (1902); it was recombined as Aelurodon ursinus by Scott and Osborn (1890); it was recombined as Dinocyon ursinus by Matthew (1902); it was recombined as Hemicyon ursinus by Frick (1926) and VanderHoof and Gregory (1940); it was recombined as Plithocyon ursinus by Hunt (1998).

Synonymy list
YearName and author
1875Canis ursinus Cope
1879Amphicyon ursinus Cope p. 46
1890Aelurodon ursinus Scott and Osborn p. 68
1902Dinocyon ursinus Matthew
1902Amphicyon ursinus Matthew p. 290
1926Hemicyon ursinus Frick p. 35 figs. Frontispiece, Figures 4, 5A and B, 9, 10 and lOA, 13A and B, 14, 15
1940Hemicyon ursinus VanderHoof and Gregory
1998Plithocyon ursinus Hunt, Jr.

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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
RankNameAuthor
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
Laurasiatheria
Scrotifera
Ferae()
CarnivoramorphaWyss and Flynn 1993
CarnivoraformesFlynn et al.
orderCarnivoraBowditch 1821
superfamilyArctoideaFlower 1869
Ursida
superfamilyUrsoideaFischer de Waldheim 1817
familyUrsidaeGray 1825
subfamilyHemicyoninae
genusPlithocyonGinsburg 1955
speciesursinus(Cope 1875)

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
C. Frick 1926Prominent premasseteric fossa; tuberculars unusually .large relative to premolars; anterior premolars separated by diastema; posterior mental foramen below anterior edge of p4.