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Temnocyon macrogenys

Mammalia - Carnivora - Amphicyonidae

Taxonomy
Temnocyon macrogenys was named by Hunt (2011). Its type specimen is F:AM 54139, a partial skeleton (eft mandible with canine alveolus, p1–2, broken roots of pathologic p3, complete p4–m3, with most of the ascending ramus, articular condyle, and angular process), and it is a 3D body fossil. Its type locality is Guernsey, which is in a Harrisonian terrestrial horizon in the Marsland Formation of Wyoming.

Synonymy list
YearName and author
2011Temnocyon macrogenys Hunt, Jr. p. 45 figs. 20, 21

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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()
infraorderCynodontia()
—Mammaliamorpha
RankNameAuthor
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Ferae()
—CarnivoramorphaWyss and Flynn 1993
—CarnivoraformesFlynn et al.
orderCarnivora
suborderCaniformiaKretzoi 1943
familyAmphicyonidaeHaeckel 1886
subfamilyTemnocyoninae
genusTemnocyon
speciesmacrogenys

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.

†Temnocyon macrogenys Hunt, Jr. 2011
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Diagnosis
ReferenceDiagnosis
R. M. Hunt 2011Largest species of Temnocyon (basilar length, ,30 cm, table 7), and the only large temnocyonine in which the plesio- morphic cusp pattern of the lower teeth is retained: m1 shear maintained; metaconids present on m1–2; m1/m2 ratio, 1.62, the lowest among Temnocyon species (table 6). Depth of mandible below m1, ,50 mm; below p2, 46 mm. Mandibular dental mea- surements highest values among species of Temnocyon: length of toothrow, p1–m3, 135 mm; lengths in mm of p2, 16.6; p4, 22.1; m1, 28.2; m2, 17.4 (table 2).
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: carnivoref
Reproduction: viviparoussubc
Created: 2005-08-30 14:52:56
Modified: 2005-08-30 16:52:56
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Lillegraven 1979, Hunt 1998, Carroll 1988, Hendy et al. 2009

Age range: Harrisonian or 24.80000 to 18.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Harrisonian24.8 - 18.5USA (Wyoming) Temnocyon sp. (type locality: 17788)