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Megacerops acer

Mammalia - Perissodactyla - Brontotheriidae

Taxonomy
Megaceratops acer was named by Cope (1873). It is a 3D body fossil. Its type locality is Horsetail Creek, which is in a Chadronian terrestrial horizon in the White River Formation of Colorado.

It was recombined as Symborodon acer by Cope (1873), Cope (1875), Hay (1902) and Osborn (1902); it was recombined as Titanotherium acer by Osborn (1896); it was recombined as Megacerops acer by Osborn (1929), Galbreath (1953) and Mader (1989); it was considered a nomen dubium by Mader (1998).

Synonyms
Synonymy list
YearName and author
1873Megaceratops acer Cope pp. 4 - 5
1873Symborodon altirostris Cope p. 12
1873Symborodon acer Cope p. 13
1875Symborodon acer Cope p. 488
1896Titanotherium acer Osborn p. 178
1902Symborodon acer Hay p. 637
1902Symborodon acer Osborn
1929Megacerops acer Osborn
1953Megacerops acer Galbreath
1989Megacerops acer Mader

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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()
familyBrontotheriidae()
subfamilyBrontotheriinaeMarsh 1873
tribeBrontotheriiniMarsh 1873
subtribeBrontotheriinaMarsh 1873
BrontotheriitaMarsh 1873
genusMegacerops
speciesacer()

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.

Megacerops acer Cope 1873
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Invalid names: Symborodon altirostris Cope 1873 [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: 2005-08-31 14:53:16
Modified: 2005-08-31 16:53:16
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Ji et al. 2002, Lillegraven 1979, Mader 1998, Carroll 1988

Age range: Chadronian or 37.20000 to 33.90000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Chadronian37.2 - 33.9USA (Colorado) Megaceratops acer (16977)