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Heptodon posticus

Mammalia - Perissodactyla

Taxonomy
Pachynolophus posticus was named by Cope (1882).

It was recombined as Heptodon posticus by Wortman (1896), Hay (1902), Radinsky (1963), Gingerich (1980) and Colbert and Schoch (1998).

Synonyms
Synonymy list
YearName and author
1882Pachynolophus posticus Cope p. 187
1896Heptodon posticus Wortman
1902Heptodon posticus Hay p. 625
1931Heptodon brownorum Seton p. 45
1963Heptodon posticus Radinsky p. 38
1980Heptodon posticus Gingerich
1998Heptodon posticus Colbert and Schoch

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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()
—Tapiromorpha(Haeckel 1873)
—Ceratomorpha(Wood 1937)
superfamilyTapiroideaGill 1872
genusHeptodon
speciesposticus()

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.

†Heptodon posticus Cope 1882
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Invalid names: Heptodon brownorum Seton 1931 [synonym]
Diagnosis
ReferenceDiagnosis
L. B. Radinsky 1963Size large: mean length m1-3, = 43.23 mm. See Table 5.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingsuperf
Diet: browsersuperf
Reproduction: viviparoussubc
Created: 2005-08-31 15:03:27
Modified: 2005-08-31 17:03:27
Source: superf = superfamily, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Ji et al. 2002, Colbert and Schoch 1998, Hendy et al. 2009, Lillegraven 1979

Age range: base of the Wasatchian to the top of the Bridgerian or 55.80000 to 46.20000 Ma

Collections (24 total)


Time interval Ma Country or state Original ID and collection number
Lostcabinian55.8 - 50.3USA (Wyoming) Heptodon posticus (15903 15915 15917 15930 15945 15998 16078)
Wasatchian55.8 - 50.3USA (Colorado) Heptodon posticus (15410 15413)
Wasatchian55.8 - 50.3USA (Wyoming) Heptodon brownorum (15904 15905 15906 15910 15996) Heptodon posticus (15486 15555 15556 15564 15566 15567 15662 15839 15942)
Bridgerian50.3 - 46.2USA (Wyoming) Heptodon posticus (16207)