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Mesohippus celer

Mammalia - Perissodactyla - Equidae

Taxonomy
Anchitherium celer was named by Marsh (1874). Its type specimen is YPM 11302, a maxilla (superior molars, P4-M3, in a portion of the right maxillary), and it is a 3D body fossil.

It was synonymized subjectively with Mesohippus bairdi by Osborn and Wortman (1895) and Prothero and Shubin (1989); it was recombined as Miohippus celer by Hay (1902); it was recombined as Mesohippus celer by Marsh (1875), Osborn (1904), Osborn (1918), Stirton (1940), Scott (1941), Clark and Beerbower (1967), Kihm (1987) and MacFadden (1998).

Synonymy list
YearName and author
1874Anchitherium celer Marsh p. 251
1875Mesohippus celer Marsh p. 248
1902Miohippus celer Hay p. 613
1904Mesohippus celer Osborn p. 168
1918Mesohippus celer Osborn p. 36 figs. Plate 2.9. Text Fig. 17
1940Mesohippus celer Stirton p. 170
1941Mesohippus celer Scott
1967Mesohippus celer Clark and Beerbower
1987Mesohippus celer Kihm
1998Mesohippus celer MacFadden p. 543

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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
—Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
superfamilyEquoidea
familyEquidae
subfamilyAnchitheriinae()
genusMesohippus
speciesceler()

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.

†Mesohippus celer Marsh 1874
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Diagnosis
ReferenceDiagnosis
H. F. Osborn 1918Molar series somewhat smaller than those of M. bairdii; protoloph and metaloph of nearly equal length; molar crowns short, brachyodont, less elevated than in M. latidens or in M. bairdii; no hypostyle; m3 of very small size.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: browserf
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-31 16:55:50
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Nowak 1991, Hendy et al. 2009, Lillegraven 1979, Carroll 1988, Ji et al. 2002

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 (South Dakota) Mesohippus celer (16885)