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Leptomeryx exilis

Mammalia - Leptomerycidae

Taxonomy
Leptomeryx exilis was named by Cook (1934). Its type specimen is HC182 (AMNH 81012), a mandible (part of a right lower jaw with m2 - m3), and it is a 3D body fossil.

It was synonymized subjectively with Leptomeryx evansi by Heaton and Emry (1996).

Synonyms
Synonymy list
YearName and author
1934Leptomeryx exilis Cook p. 154
1937Leptomeryx minimus Frick
2002Leptomeryx exilis Korth and Diamond p. 115 figs. 6 - 8
2022Leptomeryx exilis Korth et al.

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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
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Ruminantiamorpha
—Ruminantia(Scopoli 1777)
—Pecora()
familyLeptomerycidae
genusLeptomeryx
speciesexilis

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.

†Leptomeryx exilis Cook 1934
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Invalid names: Leptomeryx minimus Frick 1937 [synonym]
Diagnosis
ReferenceDiagnosis
W. W. Korth and M. E. Diamond 2002Smallest species of the genus; cheek teeth with little or no wrinkling of the enamel; Palaeomeryx-fold lacking on lower molars; Y/M type of morphology of entoconulid on M3; upper molars wider than long (subequal in dimensions in L. evansi) and lacking a protostyle.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialo
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: frugivoref
Reproduction: viviparoussubc
Created: 2005-08-31 14:47:23
Modified: 2005-08-31 16:47:23
Source: f = family, o = order, subc = subclass, c = class, subp = subphylum
References: Nowak 1999, Hendy et al. 2009, Carroll 1988, Lillegraven 1979, Webb 1998

Age range: base of the Late/Upper Chadronian to the top of the Orellan or 37.20000 to 33.30000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Chadronian - Orellan37.2 - 33.3USA (Nebraska) Leptomeryx exilis (230806)