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Leptoreodon (Hesperomeryx) edwardsi
Taxonomy
Leptoreodon (Hesperomeryx) edwardsi was named by Stock (1936) [type of subgenus Hesperomeryx, not considered valid by Gazin 1955 or Golz 1976 and never raised to genus level by any author I know of]. Its type specimen is CIT 1839, a set of teeth (An upper cheek tooth series, P2 to M3), and it is a 3D body fossil. Its type locality is Tapo Canyon (Upper), which is in an Uintan terrestrial horizon in the Sespe Formation of California.
It was recombined as Leptoreodon edwardsi by Golz (1976), Ludtke and Prothero (2004).
It was recombined as Leptoreodon edwardsi by Golz (1976), Ludtke and Prothero (2004).
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Leptoreodon (Hesperomeryx) edwardsi Stock p. 178 figs. Plate 1 |
| 1955 | Leptoreodon (Hesperomeryx) edwardsi Gazin p. 88 |
| 1976 | Leptoreodon edwardsi Golz p. 65 figs. Tables 23, 36 |
| 2004 | Leptoreodon edwardsi Ludtke and Prothero p. 104 figs. Figures 5 - 6 |
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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.
†Leptoreodon (Hesperomeryx) edwardsi Stock 1936
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. A. Ludtke and D. R. Prothero 2004 | Leptoreodon edwardsi is a medium-sized species of Leptoreodon (Fig. 6) distinguished from similar-sized L. leptolophus in having a sharp lingual inflection (Fig. 3) of the anterior crest of the p4 (a derived character). L. leptolophus and most other species of Leptoreodon have a gently curved lingual inflection of the anterior crest of p4. For this reason, the p4 in L. edwardsi appears slightly shorter and wider in proportions (Fig. 3). Compared to L. leptolophus, L. edwardsi also has slightly broader upper and lower teeth with stronger cingula and cingulids and weaker crests; a more sharply recurved metastyle on M3; a more bulbous paraconid and metaconid on p4; and a stubbier posterior lobe on m3, which is rarely completely closed. L. edwardsi is easily distinguished by size from the larger species L. major and L. marshi, and from the smaller species L. pusillus. |
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Lillegraven 1979, Hendy et al. 2009, Nowak 1999, Carroll 1988, Prothero 1998 | |||||