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Promerycochoerus leidyi
Taxonomy
Merycochoerus leidyi was named by Bettany (1876). Its type specimen is WMCV 3299, a partial skull (Partial skull with I1-M3 and partial mandible with i1-p4 (br.)), and it is a 3D body fossil.
It was recombined as Desmatochoerus leidyi by Schultz and Falkenbach (1954) and Barnosky (1986); it was synonymized subjectively with Merycochoerus superbus by Lander (1998); it was recombined as Promerycochoerus leidyi by Douglass (1901), Thorpe (1921), Thorpe (1924), Thorpe (1937) and Stevens et al. (2023).
It was recombined as Desmatochoerus leidyi by Schultz and Falkenbach (1954) and Barnosky (1986); it was synonymized subjectively with Merycochoerus superbus by Lander (1998); it was recombined as Promerycochoerus leidyi by Douglass (1901), Thorpe (1921), Thorpe (1924), Thorpe (1937) and Stevens et al. (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1876 | Merycochoerus leidyi Bettany |
| 1884 | Merycochoerus leidyi Cope p. 523 |
| 1901 | Promerycochoerus leidyi Douglass |
| 1902 | Merycochoerus leidyi Hay p. 668 |
| 1921 | Promerycochoerus leidyi Thorpe p. 228 |
| 1924 | Promerycochoerus leidyi Thorpe |
| 1937 | Promerycochoerus leidyi Thorpe p. 128 figs. Fig. 84 |
| 1954 | Desmatochoerus leidyi Schultz and Falkenbach p. 185 figs. 5 - 6 |
| 1986 | Desmatochoerus leidyi Barnosky |
| 2023 | Promerycochoerus leidyi Stevens et al. pp. 62 - 64 figs. Figure 45; Appendix 5A; Table 21 |
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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.
†Promerycochoerus leidyi Bettany 1876
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. B. Schultz and C. H. Falkenbach 1954 | SKULL: Largest and most robust of genus; longer and wider than in holotype of D. curvidens; brain case more inflated than in D. curvidens; nasals moderately robust, with slight anterior retraction; anterior nasal- maxilla contact above diastema between C/ and P 1; infraorbital foramen above anterior portion of P 4 to anterior portion of M 1 ; squamosal more robust than in other examples of the genus; malar deep below orbit; post-glenoid process wide transversely.
MANDIBLE: Largest of genus; postsymphysis below Pa; inferior border of ramus with less downward curve than in examples of D. curvidens. DENTITION: Series longer than in D. curvidens. LIMBS:Approximately equal to examples of D. hatcheri geringensis. (Known from fragmentary remains only.) | |
| M. S. Stevens et al. 2023 | Slightly smaller than P. superbus but with a proportionally longer premolar row. Zygomatic arches are moderately widespread, and moderately upturned, and more closely resemble robust individuals of Desmatochoerus than they do P. superbus. |