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Merychippus proparvulus
Taxonomy
Merychippus proparvulus was named by Osborn (1918). Its type specimen is AMNH 9394, a partial skeleton (upper jaws, vertebrre, hind foot, and parts of limb bones), and it is a 3D body fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 1918 | Merychippus proparvulus Osborn p. 117 figs. Plates 11.3, 15.6,7, 20.3, 54.1. Text Fig. 91 |
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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.
†Merychippus proparvulus Osborn 1918
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. F. Osborn 1918 | (Matthew, 1913) (1) Size medium. (2) Protocone strongly united with protoconule in an early stage
of wear; (3) prefossette open until the tooth is deeply worn, the crochet uniting with metaconule only toward the base.; (4) fossette borders nearly simple (?) due to extreme wear; (5) absence of pli caballin (?) due to extreme wear; (6) meta- conid-metastylid pillars forming a narrow column indistinctly divided by shallow groove; (7) large, heel of rna simple, elongate. (8) No malar fossa. (9) Ulnar shaft rather heavy, in proximal part at least united with radius one-third down, distal half unknown; (10) metatarsals long, shafts of lateral digits moderately reduced; (11) ungual phalanges rather narrow. |
Measurements
No measurements are available
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| Source: subf = subfamily, subc = subclass, c = class, subp = subphylum | |||||
| References: Ji et al. 2002, Carroll 1988, Lillegraven 1979, Hendy et al. 2009, MacFadden 1998, Nowak 1991 | |||||
Collections
No collection or age range data are available