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Parahippus wyomingensis

Osteichthyes - Perissodactyla - Equidae

Taxonomy
Parahippus wyomingensis was named by Schlaikjer (1935). Its type specimen is MCZ 6390, a skeleton, and it is a 3D body fossil. Its type locality is Parahippus Level, which is in a Harrisonian terrestrial horizon in the Marsland Formation of Wyoming.

Synonymy list
YearName and author
1935Parahippus wyomingensis Schlaikjer p. 148 figs. Plates 14 - 16
1940Parahippus wyomingensis Stirton p. 177
1998Parahippus wyomingensis MacFadden p. 546

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
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()
genusParahippus()
specieswyomingensis

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.

†Parahippus wyomingensis Schlaikjer 1935
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Diagnosis
ReferenceDiagnosis
E. M. Schlaikjer 1935Skull length somewhat less than that of P. tyleri. Skull proportionately narrow. I2 smaller and I3 considerably smaller
than I1. Proportionate shortening of molars and development of
crochet intermediate between P. tyleri and P. nebrascensis. Hypostyle weak and mesially.placed so that it is close to the posterior of the hypocone. Hypocone connected with metacone by a thin, narrow, straight ridge which gives a straight posterior margin to the tooth. Cheek teeth, especially P4/4 and M1/1, proportionately broad. Palate very narrow. Lower canines absent. Limbs very long. Lateral digits short. Metatarsal III proportionately short.
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: Lillegraven 1979, Nowak 1991, Ji et al. 2002, Hendy et al. 2009, Carroll 1988

Age range: Harrisonian or 23.10000 to 18.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Harrisonian23.1 - 18.5USA (Wyoming) Parahippus wyomingensis (type locality: 17817)