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Leptomeryx antecedens

Mammalia - Leptomerycidae

Taxonomy
Leptomeryx antecedens was named by Cook (1934). Its type specimen is No. HC504, a mandible (left lower jaw), and it is not a trace fossil. Its type locality is Northwest of Harrison (Chadron), which is in a Chadronian terrestrial horizon in the Chadron Formation of Nebraska.

It was considered a nomen dubium by Storer (1984).

Synonymy list
YearName and author
1934Leptomeryx antecedens Cook p. 153

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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
speciesantecedens

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 antecedens Cook 1934
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Diagnosis
No diagnoses are available
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: Lillegraven 1979, Hendy et al. 2009, Nowak 1999, Webb 1998, Carroll 1988

Age range: Chadronian or 37.20000 to 33.90000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Chadronian37.2 - 33.9USA (Nebraska) Leptomeryx antecedens (type locality: 17000)