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Leptocyon leidyi

Mammalia - Carnivora - Canidae

Taxonomy
Leptocyon leidyi was named by Tedford et al. (2009). Its type specimen is UNSM 25715, a partial skull, and it is a 3D body fossil. Its type locality is Hemingford Quarry 12D, which is in a Hemingfordian terrestrial horizon in the Runningwater Formation of Nebraska.

Synonymy list
YearName and author
2009Leptocyon leidyi Tedford et al. p. 31 figs. 7, 11F–I, 12C–J, 13A–F, 17

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
subclassSynapsida
suborderEupelycosauria
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
superfamilyCanoideaSimpson 1931
familyCanidaeFischer 1817
subfamilyCaninaeGill 1872
genusLeptocyon
speciesleidyi

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. H. Tedford et al. 2009L. leidyi differs from L. gregorii in dentition averaging slightly larger (fig. 7), proportionally shorter and less inflated bulla, and tendency to reduce and lose postproto- crista of M2, and loss of paraconid of m2. L. leidyi averages smaller than L. vafer with 95% confidence interval of m1 length nearly separated (fig. 7); m2 slightly longer relative to length of m1, it lacks enlargement of m2 anterolabial cingulum and short nasals that characterize L. vafer, but it shares lack of postprotocrista on M2.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: carnivoref
Diet 2: omnivoref
Created: 2005-06-08 10:11:09
Modified: 2005-08-22 19:28:06
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Nowak 1991, Carroll 1988, Hendy et al. 2009, Ji et al. 2002

Age range: base of the Harrisonian to the top of the Barstovian or 24.80000 to 13.60000 Ma

Collections (25 total)


Time interval Ma Country or state Original ID and collection number
Harrisonian24.8 - 20.43USA (Nebraska) Leptocyon leidyi (17842)
Hemingfordian20.43 - 15.97USA (Nebraska) Leptocyon leidyi (17902 17920 17932 type locality: 17942 17952 17955 17956 17972 17978 18000 18001) Leptocyon sp. (17970)
Hemingfordian20.43 - 15.97USA (Oregon) Leptocyon leidyi (208512)
Barstovian15.97 - 13.6USA (California) Leptocyon leidyi (19356 19364 19366 19463 19510 19548)
Barstovian15.97 - 13.6USA (Nebraska) Leptocyon vafer (17905)
Barstovian15.97 - 13.6USA (Nevada) Leptocyon leidyi (159094)
Early/Lower Barstovian15.97 - 13.6USA (New Mexico) Leptocyon leidyi (19547 19611)
Early/Lower Barstovian15.97 - 13.6USA (Nebraska) Leptocyon leidyi (17976)