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Leptocyon matthewi

Osteichthyes - Carnivora - Canidae

Taxonomy
Leptocyon matthewi was named by Tedford et al. (2009). Its type specimen is F:AM 25198, a mandible, and it is a 3D body fossil. Its type locality is Bear Creek Quarry, which is in a Clarendonian terrestrial horizon in the Ash Hollow Formation of Nebraska.

Synonymy list
YearName and author
2009Leptocyon matthewi Tedford et al. p. 43 figs. 7, 17, 18A–F; appendices 3, 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
genusLeptocyon
speciesmatthewi

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.

†Leptocyon matthewi Tedford et al. 2009
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Diagnosis
ReferenceDiagnosis
R. H. Tedford et al. 2009Differs from L. vafer in m1 significantly larger without any overlap of confidence interval (fig. 7); m1 with larger and taller crowned hypoconid, entoconid enlarged, coalescing with base of hypoconid to close talonid basin, hypoconulid shelf present; and m2 smaller relative to length of m1 (fig. 17) with stronger anterolabial cin- gulum that extends more posteriorly.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: carnivoref
Diet 2: omnivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-22 19:28:06
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Lillegraven 1979, Hendy et al. 2009, Carroll 1988, Nowak 1991

Age range: Clarendonian or 12.50000 to 9.40000 Ma

Collections (18 total)


Time interval Ma Country or state Original ID and collection number
Clarendonian12.5 - 9.4USA (Nevada) Leptocyon matthewi (18888)
Clarendonian12.5 - 9.4USA (Nebraska) Leptocyon matthewi (type locality: 18042 18095 18171 18218 18222 18227 18321 18336 18496)
Clarendonian12.5 - 9.4USA (South Dakota) Leptocyon matthewi (18200 18268) Leptocyon sp. (18063)
Late/Upper Clarendonian12.5 - 9.4USA (Nebraska) Leptocyon matthewi (18327) Leptocyon sp. (18066)
Late/Upper Clarendonian12.5 - 9.4USA (New Mexico) Leptocyon matthewi (19528)
Clarendonian - Hemphillian12.5 - 4.7USA (Nebraska) Leptocyon matthewi (18069 18134)