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Merychippus calamarius stylodontus

Mammalia - Perissodactyla - Equidae

Taxonomy
Merychippus calamarius stylodontus was named by Merriam (1919). Its type specimen is UCMP 21410, a set of teeth (upper right M1 - M2), and it is a 3D body fossil.

It was recombined as Stylonus stylodontus by Kelly and Lander (1988) and Kelly (1992); it was recombined as Pliohippus stylodontus by Evander (1997); it was recombined as Acritohippus stylodontus by Kelly (1998); it was recombined as Merychippus stylodontus by Lewis (1968), Kelly (1995) and MacFadden (1998).

Synonymy list
YearName and author
1919Merychippus calamarius stylodontus Merriam p. 505 figs. figs. 43-46
1968Merychippus stylodontus Lewis p. C79
1988Stylonus stylodontus Kelly and Lander
1992Stylonus stylodontus Kelly
1995Merychippus stylodontus Kelly p. 16
1997Pliohippus stylodontus Evander p. 67 fig. 4
1998Acritohippus stylodontus Kelly
1998Merychippus stylodontus MacFadden p. 547

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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()
superfamilyEquoidea
familyEquidae
subfamilyEquinae
genusMerychippus
speciescalamarius()
subspeciesstylodontus

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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Diagnosis
No diagnoses are available