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Archaeohippus penultimus

Mammalia - Perissodactyla - Equidae

Taxonomy
Archaeohippus penultimus was named by Matthew (1924). Its type locality is Thomson Quarry, which is in a Hemingfordian terrestrial horizon in the Sheep Creek Formation of Nebraska.

It was recombined as Parahippus penultimus by Hay (1930).

Synonymy list
YearName and author
1924Archaeohippus penultimus Matthew
1930Parahippus penultimus Hay
1932Archaeohippus penultimus Matthew p. 7
1934Archaeohippus penultimus Bode
1940Archaeohippus penultimus Stirton p. 176
1998Archaeohippus penultimus MacFadden p. 546

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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()
genusArchaeohippus
speciespenultimus

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.

†Archaeohippus penultimus Matthew 1924
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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: Lillegraven 1979, Nowak 1991, Ji et al. 2002, Carroll 1988, Hendy et al. 2009

Age range: Hemingfordian or 20.43000 to 15.97000 Ma

Collections (8 total)


Time interval Ma Country or state Original ID and collection number
Hemingfordian20.43 - 15.97USA (Nebraska) Archaeohippus penultimus (17871 17872 17920 17952 17961 17987 18000 type locality: 18001)