| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Pliohippus proversus
Taxonomy
Pliohippus proversus was named by Merriam (1916). Its type specimen is UCMP 21330, a tooth (a superior molar, m1 or m2, of the left side), and it is a 3D body fossil.
It was recombined as Plesippus proversus by Matthew (1924), Hay (1930), Matthew and Stirton (1930), Matthew and Stirton (1930), Russell and VanderHoof (1931), Gazin (1936), Schultz (1936) and Schultz (1937); it was recombined as Equus proversus by Stirton (1940); it was synonymized subjectively with Equus simplicidens by Savage (1951), Skinner et al. (1972) and Kurten and Anderson (1980); it was considered a nomen dubium by Winans (1989), Macdonald (1992) and Kelly (1998).
It was recombined as Plesippus proversus by Matthew (1924), Hay (1930), Matthew and Stirton (1930), Matthew and Stirton (1930), Russell and VanderHoof (1931), Gazin (1936), Schultz (1936) and Schultz (1937); it was recombined as Equus proversus by Stirton (1940); it was synonymized subjectively with Equus simplicidens by Savage (1951), Skinner et al. (1972) and Kurten and Anderson (1980); it was considered a nomen dubium by Winans (1989), Macdonald (1992) and Kelly (1998).
Synonymy list
| Year | Name and author |
|---|---|
| 1916 | Pliohippus proversus Merriam |
| 1918 | Pliohippus proversus Osborn p. 170 figs. Text Figs. 137, 138 |
| 1924 | Plesippus proversus Matthew p. 2 |
| 1930 | Plesippus proversus Hay |
| 1930 | Plesippus proversus Matthew and Stirton |
| 1931 | Plesippus proversus Russell and VanderHoof |
| 1936 | Plesippus proversus Gazin |
| 1936 | Plesippus proversus Schultz |
| 1937 | Plesippus proversus Schultz |
| 1940 | Equus proversus Stirton p. 195 |
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.
†Pliohippus proversus Merriam 1916
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. F. Osborn 1918 | (Merriam, 1916, p. 526) "Cheek-teeth large, long-crowned, heavily cemented. Upper cheek-teeth slightly curved; mesostyle heavy; fossettes wide to narrow, with moderately crinkled enamel borders; protocone large, strongly compressed laterally in the molars, inner border convex or nearly flat. Lower cheek-teeth with short or long parastylid; metaconid-metastylid column commonly long anteroposteriorly and narrow transversely, inner groove wide, flat as in Equua, or somewhat narrowed tending toward the angular form seen in Pliohippua; outer faces of protoconid and hypoconid either convex or somewhat flattened. Limb elements, so far as known, much like those of Equua. Unciform facet of metacarpal III sloping away from the plane of the magnum at approximately the angle shown in Equua. Late;ral digits apparently much reduced distally and feet presumably monodactyle." |