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Rudiocyon amplidens

Mammalia - Carnivora - Amphicyonidae

Taxonomy
Rudiocyon amplidens was named by Hunt (2011). Its type specimen is LACM 480, a mandible, and it is a 3D body fossil. It is the type species of Rudiocyon.

Synonymy list
YearName and author
2011Rudiocyon amplidens Hunt, Jr. p. 54 figs. 22, 23

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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()
RankNameAuthor
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
Laurasiatheria
Scrotifera
Ferae()
CarnivoramorphaWyss and Flynn 1993
CarnivoraformesFlynn et al.
orderCarnivoraBowditch 1821
suborderCaniformiaKretzoi 1943
familyAmphicyonidaeHaeckel 1886
subfamilyTemnocyoninae
genusRudiocyon
speciesamplidens

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
R. M. Hunt 2011Largest John Day temnocyo- nine species, m1 length, 28.7 mm, m1 without metaconid thereby distinguished from Tem- nocyon; m1 hypoconid centrally placed on talonid, no entoconid; m1 labial cingulum sinuous, not straight as in Delotrochanter; p4 narrower than in Delotrochanter and Mam- macyon ferocior but similar in this respect to M. obtusidens, T. ferox, and T. macrogenys. Relatively short m2 (E/F ratio, ,1.9, the highest value for any temnocyonine), not
elongate as in Mammacyon, with blunt protoconid and hypoconid the principal cusps, aligned one behind the other along the midline of m2; small m2 paraconid occupies anterointernal corner; no metaconid or entoconid. Mandible deep below m1–2 (43 mm), more so than in any other John Day temnocyonine.