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Merychyus verrucomalus
Taxonomy
Merychyus verrucomalus was named by Stevens (1970). Its type locality is Main Fork of Cottonwood Creek, which is in a Hemingfordian terrestrial horizon in the Runningwater Formation of Nebraska.
It was synonymized subjectively with Merychyus elegans by Kelly and Lander (1988); it was synonymized subjectively with Merychyus minimus by Lander (1998).
It was synonymized subjectively with Merychyus elegans by Kelly and Lander (1988); it was synonymized subjectively with Merychyus minimus by Lander (1998).
Synonymy list
| Year | Name and author |
|---|---|
| 1970 | Merychyus verrucomalus Stevens |
| 2007 | Merychyus verrucomalus Stevens and Stevens p. 164 |
| 2023 | Merychyus verrucomalus Stevens et al. p. 43 figs. Figure 32; Appendix 2F; Table A14 |
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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.
†Merychyus verrucomalus Stevens 1970
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. S. Stevens et al. 2023 | Similar to M. elegans in size (M1-3 length = 42-51 mm), and most other morphology, except for an extremely deep, outwardly flaring malar, with rugosities on the ventral margin. |
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Lillegraven 1979, Carroll 1988, Lander 1998, Hendy et al. 2009, Nowak 1999 | |||||
Age range: base of the Harrisonian to the top of the Early/Lower Hemingfordian or 23.10000 to 16.30000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Harrisonian | USA (Nebraska) | Merychyus verrucomalus (17738) | |
| Early/Lower Hemingfordian | USA (Nebraska) | Merychyus verrucomalus (17879 type locality: 17962) |