| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Miohippus longicristis
Taxonomy
Anchitherium longicristis was named by Cope (1878) [also said to be 1879].
It was recombined as Miohippus longicristis by Cope (1894), Scott (1895), Roger (1896), Trouessart (1898), Hay (1902), Hay (1930) and Stirton (1940); it was recombined as Mesohippus longicristis by Matthew (1899), Osborn (1904) and Merriam and Sinclair (1907); it was considered a nomen dubium by Osborn (1918) and Macdonald (1992).
It was recombined as Miohippus longicristis by Cope (1894), Scott (1895), Roger (1896), Trouessart (1898), Hay (1902), Hay (1930) and Stirton (1940); it was recombined as Mesohippus longicristis by Matthew (1899), Osborn (1904) and Merriam and Sinclair (1907); it was considered a nomen dubium by Osborn (1918) and Macdonald (1992).
Synonymy list
| Year | Name and author |
|---|---|
| 1878 | Anchitherium longicristis Cope p. 75 |
| 1894 | Miohippus longicristis Cope p. 791 |
| 1895 | Miohippus longicristis Scott |
| 1896 | Miohippus longicristis Roger |
| 1898 | Miohippus longicristis Trouessart |
| 1899 | Mesohippus longicristis Matthew |
| 1902 | Miohippus longicristis Hay p. 614 |
| 1904 | Mesohippus longicristis Osborn p. 168 |
| 1907 | Mesohippus longicristis Merriam and Sinclair |
| 1930 | Miohippus longicristis Hay |
| 1940 | Miohippus longicristis Stirton p. 172 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
†Miohippus longicristis Cope 1878
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. D. Cope 1878 |
This is a smaller species than the two above described, having the di- merisions of the A. bairdi. The best specimen representing it consists of a right maxillary bone, which supports all the molars excepting the last. The infraorbital foramen issues above the third premolar. The first pre- molar is two-rooted; the second is not elongate, and is equal to the other premolars, or the penultimate true molar, in antero posterior diameter. There are no interior basal tubercles or cingula, but the anterior cingulum has a tubercle which is appressed closely to the anterior median. The posterior cingulum expands into a large trihedral posterior marginal tuber- cle. The anterior median tubercle crest, appears in the worn state to be moderately distinct from the internal ; both it and the posterior middle are characterized by their production outwards; the latter passing between the exterior crescents and forming a junction with their common connection. The external cingula are not strongly marked, nor the external faces of the crescents impressed ; the latter are convex, and with the median ridge little distinct. Enamel smooth. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Ji et al. 2002, Hendy et al. 2009, Carroll 1988, Nowak 1991, Lillegraven 1979 | |||||
Collections
No collection or age range data are available