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Epihippus gracilis

Mammalia - Perissodactyla - Equidae

Taxonomy
Anchitherium gracilis was named by Marsh (1871).

It was recombined as Orohippus gracilis by Marsh (1874); it was recombined as Pachynolophus gracilis by Roger (1896); it was recombined as Mesohippus gracilis by Trouessart (1898); it was recombined as Epihippus (Epihippus) gracilis by Stirton (1940); it was recombined as Epihippus gracilis by Marsh (1877), Scott et al. (1877), Scott et al. (1877), Matthew (1899), Hay (1902), Granger (1908), Peterson (1919), Scott (1945), Black (1979), MacFadden (1980), Westgate (1990), McCarroll et al. (1996), Hanson (1996), MacFadden (1998) and Dawson and Constenius (2018).

Synonyms
Synonymy list
YearName and author
1871Anchitherium gracilis Marsh p. 38
1874Orohippus gracilis Marsh p. 249
1877Epihippus gracilis Marsh
1877Epihippus gracilis Scott and et al.
1896Pachynolophus gracilis Roger
1898Mesohippus gracilis Trouessart
1899Epihippus gracilis Matthew
1902Epihippus gracilis Hay p. 612
1908Epihippus gracilis Granger
1908Epihippus parvus Granger
1919Epihippus gracilis Peterson p. 101
1919Epihippus parvus Peterson p. 102
1940Epihippus (Epihippus) gracilis Stirton p. 169
1940Epihippus (Epihippus) parvus Stirton p. 169
1945Epihippus gracilis Scott
1979Epihippus gracilis Black
1980Epihippus gracilis MacFadden
1990Epihippus gracilis Westgate
1996Epihippus gracilis Hanson
1996Epihippus gracilis McCarroll et al.
1998Epihippus gracilis MacFadden p. 543
2018Epihippus gracilis Dawson and Constenius p. 50

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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()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
superfamilyEquoidea
familyEquidae
genusEpihippus
speciesgracilis()

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.

†Epihippus gracilis Marsh 1871
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Invalid names: Epihippus parvus Granger 1908 [synonym]
Diagnosis
No diagnoses are available
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: Hendy et al. 2009, Ji et al. 2002, Carroll 1988, Lillegraven 1979, Nowak 1991

Age range: Early/Lower Uintan or 46.20000 to 39.70000 Ma

Collections (32 total)


Time interval Ma Country or state Original ID and collection number
Middle Eocene47.8 - 37.71USA (Oregon) Epihippus gracilis (16842)
Early/Lower Uintan46.2 - 39.7USA (Wyoming) Epihippus gracilis (186968)
Early/Lower Uintan46.2 - 39.7USA (Colorado) Epihippus parvus (16623)
Late/Upper Uintan46.2 - 39.7Canada (Saskatchewan) Epihippus gracilis (16626)
Late/Upper Uintan46.2 - 39.7USA (Montana) Epihippus gracilis (16584)
Late/Upper Uintan46.2 - 39.7USA (Texas) Epihippus uintensis (16614)
Uintan46.2 - 39.7USA (Utah) Epihippus gracilis (16607 16646 16654) Epihippus parvus (16589 16657)
Uintan46.2 - 39.7USA (Texas) Epihippus gracilis (16535 16536 16537)
Uintan46.2 - 39.7USA (Wyoming) Epihippus gracilis (16579 16581 16649 202168) Epihippus parvus (16513 16514 16517 16518 16552) Epihippus uintensis (16560 16562 16570 16578 16642 16643 16645) Hyracotheriinae indet. (16630)
Uintan46.2 - 39.7USA (Montana) Epihippus gracilis (222915)