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Eucyon davisi

Osteichthyes - Carnivora - Canidae

Taxonomy
Canis davisi was named by Merriam (1911). Its type specimen is UCMP 545, a set of teeth, and it is a 3D body fossil.

It was recombined as Eucyon davisi by Tedford and Qiu (1996), Spassov and Rook (2006), Wang et al. (2008), Tedford et al. (2009).

Synonyms
Synonymy list
YearName and author
1911Canis davisi Merriam p. 242 figs. 11 - 13
1937Leptocyon shermanensis Hibbard
1942Vulpes shermanensis Gregory
1956Canis condoni Shotwell
1996Eucyon davisi Tedford and Qiu
2006Eucyon davisi Spassov and Rook
2008Eucyon davisi Wang et al.
2009Eucyon davisi Tedford et al. p. 92 figs. 27, 33C–T, 34A–Q, 35A–S, 36A–B, 39, 40, 43–44, 50–52, 60C, 61C; appendices 2–4

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
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()
—Pancarnivora
—CarnivoramorphaWyss and Flynn 1993
—CarnivoraformesFlynn et al.
orderCarnivora
familyCanidae
subfamilyCaninaeGill 1872
tribeCaniniFischer de Waldheim 1817
genusEucyon
speciesdavisi()

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.

†Eucyon davisi Merriam 1911
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Invalid names: Canis condoni Shotwell 1956 [synonym], Leptocyon shermanensis Hibbard 1937 [synonym]
Diagnosis
ReferenceDiagnosis
R. H. Tedford et al. 2009Eucyon davisi differs from E.? skinneri in its larger size; longer jaw; more elongate, taller crowned premolars; p4 with second posterior cusp; m1 trigonid relatively longer, protoconid taller crowned, entoconid and hypoconid taller crowned, and larger hypoconulid shelf.
Eucyon davisi differs from Canis ferox and C. lepophagus in its smaller size and less robust skull and jaws; frontal sinus ends well before frontoparietal suture; jugal shallower relative to length of skull; width of skull across cheek teeth greater relative to length of skull; sagittal crest weaker; inion wider (never narrows to a point); premolars less robust; p4 anterolabial border generally less rounded; M1 paracone and metacone lower crowned and nearly subequal in size with stronger labial cingulum and stronger parastyle; m1 talonid without transverse crest between entoconid and hypoconid and hypoconulid shelf relatively smaller; angular process of mandible less expanded with smaller fossae for pterygoid muscle; and radius/tibia ratio less than 80%.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: carnivoreg
Diet 2: omnivoreg
Reproduction: viviparoussubc
Created: 2009-01-04 14:34:38
Modified: 2009-01-04 16:36:09
Source: g = genus, f = family, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Ji et al. 2002, Nowak 1991, Lillegraven 1979, Hendy et al. 2009, Van Valkenburgh 1988

Age range: base of the Hemphillian to the top of the Late/Upper Pliocene or 9.40000 to 2.58000 Ma

Collections (32 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Miocene11.63 - 5.333Mongolia (Great Lake Depression) Eucyon davisi (197941)
Hemphillian9.4 - 4.7USA (California) Eucyon davisi (19480)
Hemphillian9.4 - 4.7USA (Arizona) Eucyon davisi (19272)
Hemphillian9.4 - 4.7USA (Texas) Canis davisi (18097)
Hemphillian9.4 - 4.7USA (Washington) Eucyon davisi (232055)
Hemphillian9.4 - 4.7USA (Oklahoma) Canis davisi (18304)
Hemphillian9.4 - 4.7USA (Florida) Eucyon davisi (18560)
Hemphillian9.4 - 4.7USA (Nevada) Canis davisi (18900) Eucyon davisi (19095)
Hemphillian9.4 - 4.7USA (New Mexico) Canis davisi (19533)
Hemphillian9.4 - 4.7USA (Kansas) Canis davisi (18166 18342) Leptocyon shermanensis (18140)
Hemphillian9.4 - 4.7USA (Oregon) Canis condoni (18970) Canis davisi (18936 18943 18944 19116)
Late/Upper Hemphillian9.4 - 4.7USA (Texas) Canis sp. (18036) Eucyon davisi (18340)
Late/Upper Hemphillian9.4 - 4.7USA (Nebraska) Canis davisi (18247) Eucyon davisi (35430)
Late/Upper Hemphillian9.4 - 4.7USA (California) Eucyon davisi (19582)
Late/Upper Hemphillian9.4 - 4.7USA (Arizona) Canis davisi (19612) Canis sp. (19514 19610)
Late/Upper Hemphillian9.4 - 4.7USA (Florida) Eucyon davisi (18532)
Late/Upper Hemphillian9.4 - 4.7Mexico (Chihuahua) Eucyon davisi (18755)
Early/Lower Pliocene5.333 - 3.6Canada (Northwest Territories) Eucyon davisi (20083)
Blancan4.7 - 1.4USA (Washington) Canis davisi (20063)
Late/Upper Pliocene3.6 - 2.58China (Shanxi) Eucyon davisi (230804 230919)