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Pliohippus tehonensis
Taxonomy
Protohippus tehonensis was named by Merriam (1915) [also said to be 1916]. Its type specimen is UCMP 21779, a tooth (left M1), and it is a 3D body fossil. Its type locality is South Tejon Hills, which is in a Clarendonian terrestrial horizon in the "Santa Margarita" Formation of California.
It was recombined as Pliohippus (Pliohippus) tehonensis by Stirton (1940); it was recombined as Dinohippus tehonensis by Hulbert (1993); it was synonymized subjectively with Pliohippus fairbanksi by MacFadden (1998); it was considered a nomen dubium by Kelly (1995); it was recombined as Pliohippus tehonensis by Drescher (1941) and Kelly (1998).
It was recombined as Pliohippus (Pliohippus) tehonensis by Stirton (1940); it was recombined as Dinohippus tehonensis by Hulbert (1993); it was synonymized subjectively with Pliohippus fairbanksi by MacFadden (1998); it was considered a nomen dubium by Kelly (1995); it was recombined as Pliohippus tehonensis by Drescher (1941) and Kelly (1998).
Synonymy list
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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.
†Pliohippus tehonensis Merriam 1915
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Diagnosis
Reference | Diagnosis | |
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H. F. Osborn 1918 | (Merriam, 1915, Osborn, 1918) (1) Protocone and hypocone in the same longitudinal plane; (2)
from the crochet region a pli cahallin, a prominent crochet fold projecting into the prefossette; (3) a prominent fold projecting into the postfossette; (4) pre- and postfossettes triangular in form. |