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Diceratherium tridactylum

Mammalia - Perissodactyla - Rhinocerotidae

Taxonomy
Aceratherium tridactylum was named by Osborn (1893). Its type locality is Indian Stronghold (Protoceras Channel), which is in a Whitneyan fluvial sandstone in the Brule Formation of South Dakota.

It was recombined as Caenopus tridactylus by Hay (1902), Osborn and Matthew (1909) and Troxell (1921); it was recombined as Subhyracodon tridactylus by Wood (1927), Wood (1961), Emry (1987) and Manning (1997); it was recombined as Subhyracodon tridactylum by Stock (1933); it was recombined as Diceratherium tridactylum by Osborn (1923), Scott (1941), Prothero (1998), Prothero (2005) and Lofgren et al. (2020).

Subspecies
Caenopus tridactylus avus, Caenopus tridactylus metalophus
Sister species lacking formal opinion data
D. douvillei

Synonyms
Synonymy list
YearName and author
1893Aceratherium tridactylum Osborn
1894Diceratherium proavitum Hatcher p. 360
1902Caenopus tridactylus Hay p. 643
1908Aceratherium tridactylum Douglass p. 265
1908Aceratherium tridactylum Loomis
1909Caenopus tridactylus Osborn and Matthew
1921Caenopus tridactylus Troxell
1923Diceratherium tridactylum Osborn
1927Diceratherium avum Wood
1927Subhyracodon tridactylus Wood
1933Subhyracodon tridactylum Stock pp. 18, 20, 21
1941Diceratherium tridactylum Scott
1961Subhyracodon tridactylus Wood
1987Subhyracodon tridactylus Emry
1997Subhyracodon tridactylus Manning
1998Diceratherium tridactylum Prothero
2005Diceratherium tridactylum Prothero p. 49
2020Diceratherium tridactylum Lofgren 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
familyRhinocerotidae
subtribeElasmotheriina()
genusDiceratherium
speciestridactylum()

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.

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Invalid names: Diceratherium avum Wood 1927 [synonym], Diceratherium proavitum Hatcher 1894 [synonym]
†Caenopus tridactylus avus Troxell 1921
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Diagnosis
No diagnoses are available