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Leptomeryx evansi

Mammalia - Leptomerycidae

Taxonomy
Leptomeryx evansi was named by Leidy (1853) [genotype]. Its type specimen is USNM 157, a partial skull (partial skull and associated mandible), and it is a 3D body fossil.

Synonyms
Synonymy list
YearName and author
1853Leptomeryx evansi Leidy p. 394
1857Leptomeryx evansi Leidy p. 89
1873Trimerodus cedrensis Cope
1873Trimerodus cedreusis Cope p. 8
1873Leptomeryx evansi Leidy p. 216
1902Leptomeryx evansi Hay p. 671
1934Leptomeryx lenis Cook p. 154
1940Leptomeryx evansi Scott p. 553
2001Leptomeryx evansi Vislobokova p. S138
2002Leptomeryx evansi Korth and Diamond p. 113 figs. 2, 3

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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
speciesevansi

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 evansi Leidy 1853
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Invalid names: Leptomeryx lenis Cook 1934 [synonym], Trimerodus cedrensis Cope 1873 [synonym]
Diagnosis
ReferenceDiagnosis
W. W. Korth and M. E. Diamond 2002Intermediate-sized species; enamel on cheek teeth highly crenulated; Palaeomeryx-fold present on lower molars; entoconulid on M3 cylin- drical with deep posterior valley, separating it from the hypoconulid; protostyle present on upper molars.
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: Webb 1998, Hendy et al. 2009, Nowak 1999, Lillegraven 1979, Carroll 1988

Age range: base of the Chadronian to the top of the Arikareean or 37.20000 to 18.50000 Ma

Collections (45 total)


Time interval Ma Country or state Original ID and collection number
Chadronian37.2 - 33.9USA (Montana) Leptomeryx evansi (16946)
Chadronian37.2 - 33.9USA (Colorado) Leptomeryx evansi (16977)
Chadronian37.2 - 33.9Canada (British Columbia) Leptotragulus significans (16984)
Chadronian37.2 - 33.9USA (Nebraska) Leptomeryx evansi (16918 16929 17018)
Chadronian37.2 - 33.9USA (Wyoming) Leptomeryx evansi (16973)
Late/Upper Chadronian37.2 - 33.9USA (Montana) Leptomeryx evansi (17027)
Chadronian - Orellan37.2 - 33.3USA (Wyoming) Leptomeryx evansi (17063)
Orellan33.9 - 33.3USA (Montana) Leptomeryx evansi (17074 17090 17138 17154)
Orellan33.9 - 33.3USA (Wyoming) Leptomeryx evansi (17064 17105 17106 17318)
Orellan33.9 - 33.3USA (North Dakota) Leptomeryx evansi (17100 17301)
Orellan33.9 - 33.3USA (South Dakota) Leptomeryx evansi (17094 17102 17103 17115 17133 17153 17173 17174 17295 17296 163487)
Orellan33.9 - 33.3USA (Colorado) Leptomeryx evansi (17081 17082 17083)
Orellan33.9 - 33.3Canada (Saskatchewan) Leptomeryx evansi (17055 17111)
Orellan33.9 - 33.3USA (Nebraska) Leptomeryx evansi (17062 17098 17164 17165)
Whitneyan33.3 - 30.8USA (South Dakota) Leptomeryx lenis (17336 17337 17338)
Whitneyan33.3 - 30.8USA (Colorado) Leptomeryx evansi (17426)
Whitneyan33.3 - 30.8USA (Nebraska) Leptomeryx lenis (17388)
Arikareean29.5 - 18.5USA (Oregon) Leptomeryx evansi (180202)