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Menodus heloceras

Mammalia - Perissodactyla - Brontotheriidae

Taxonomy
Megaceratops helocerus 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 heloceras by Cope (1873), Cope (1875) and Osborn (1902); it was recombined as Titanotherium heloceras by Osborn (1896) and Hay (1902); it was recombined as Menodus heloceras by Osborn (1929) and Emry (1975); it was recombined as Menops heloceras by Mader (1989) and Mader (1998).

Synonymy list
YearName and author
1873Megaceratops helocerus Cope pp. 4 - 5
1873Symborodon heloceras Cope p. 14
1875Symborodon heloceras Cope p. 487
1896Titanotherium heloceras Osborn p. 179
1902Titanotherium heloceras Hay p. 636
1902Symborodon heloceras Osborn
1929Menodus heloceras Osborn p. 524 figs. Plates XLVII, CXXIII, CXXIV; text figures 168 378 399, 409, 435, 436, 613, 639
1975Menodus heloceras Emry
1989Menops heloceras Mader
1998Menops heloceras 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
genusMenodus
speciesheloceras()

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.

Menodus heloceras Cope 1873
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Diagnosis
No diagnoses are available