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Hyrachyus eximius

Mammalia - Perissodactyla - Hyrachyidae

Taxonomy
Hyrachyus eximius was named by Leidy (1871).

It was synonymized subjectively with Hyrachyus by Troxell (1922).

Sister species lacking formal opinion data

Synonyms
Synonymy list
YearName and author
1871Hyrachyus eximius Leidy p. 229
1872Hyrachyus princeps Marsh p. 125
1873Hyrachyus eximius Cope p. 6
1873Hyrachyus princeps Cope p. 6
1873Hyrachyus eximius Leidy p. 66
1878Hyrachyus imperialis Osborn et al.
1902Hyrachyus eximius Hay p. 639
1902Hyrachyus imperialis Hay p. 639
1902Hyrachyus princeps Hay p. 639
1934Hyrachyus eximius Wood
1934Hyrachyus hypostylus Wood
1934Metahyrachyus troxelli Wood
1967Hyrachyus eximius Radinsky
1996Hyrachyus eximius McCarroll et al.
1998Hyrachyus eximius Colbert and Schoch
2002Hyrachyus eximius Antoine et al.

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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
Mammaliaformes
classMammalia
RankNameAuthor
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
Tapiromorpha(Haeckel 1873)
Ceratomorpha(Wood 1937)
superfamilyRhinocerotoidea
familyHyrachyidaeOsborn 1892
genusHyrachyus
specieseximius

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.

Hyrachyus eximius Leidy 1871
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Invalid names: Hyrachyus hypostylus Wood 1934 [synonym], Hyrachyus imperialis Osborn et al. 1878 [synonym], Hyrachyus princeps Marsh 1872 [synonym], Metahyrachyus troxelli Wood 1934 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingsubo
Diet: browsersubo
Reproduction: viviparoussubc
Created: 2005-08-31 15:03:12
Modified: 2005-08-31 17:03:12
Source: subo = suborder, subc = subclass, c = class, subp = subphylum
References: Lillegraven 1979, Colbert and Schoch 1998, Carroll 1988, Hendy et al. 2009, Ji et al. 2002

Age range: base of the Middle Eocene to the top of the Uintan or 48.60000 to 40.40000 Ma

Collections (28 total)


Time interval Ma Country or state Original ID and collection number
Bridgerian50.3 - 46.2USA (Wyoming) Hyrachyus eximius (16135 16138 16200 16206 16207 16213 16234 16235 16244 16278 16407 16413 16415 16428 16438 16444 16502 16647 202162) Hyrachyus princeps (16288 16420) Metahyrachyus troxelli (16193)
Middle Eocene48.6 - 37.2USA (Oregon) Hyrachyus sp. (16202)
Uintan46.2 - 40.4USA (Utah) Hyrachyus eximius (16655)
Uintan46.2 - 40.4USA (Wyoming) Hyrachyus eximius (16556 16565 16576 16648)