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Paramerychyus relictus
Taxonomy
Eporeodon relictus was named by Loomis (1924). Its type specimen is AMNH 13813, a partial skull (a "considerably mutilated skull" [Thorpe 1937]; Partial skull with C/(rt.)-M3), and it is a 3D body fossil. Its type locality is American Horse Creek, which is in a Harrisonian terrestrial horizon in the Harrison Formation of South Dakota.
It was recombined as Eporeodon major relictus by Thorpe (1937); it was recombined as Paramerychyus relictus by Schultz and Falkenbach (1947); it was recombined as Merycoides relictus by Lander (1998).
It was recombined as Eporeodon major relictus by Thorpe (1937); it was recombined as Paramerychyus relictus by Schultz and Falkenbach (1947); it was recombined as Merycoides relictus by Lander (1998).
Synonymy list
| Year | Name and author |
|---|---|
| 1924 | Eporeodon relictus Loomis |
| 1937 | Eporeodon major relictus Thorpe p. 78 figs. Fig. 39; PI. VI, figs. 4-5 |
| 1947 | Paramerychyus relictus Schultz and Falkenbach p. 249 figs. 1, 10, 14 |
| 1998 | Merycoides relictus Lander |
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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.
†Paramerychyus relictus Loomis 1924
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. B. Schultz and C. H. Falkenbach 1947 | SKULL: Slightly larger than known examples of P. harrisonensis and Eporeodon occidentalis; small but deep lacrimal fossa; prelacrimal vacuity questionably present; posterior border of nasals extended beyond the anterior line of the orbits; infraorbital foramen above the posterior border of P3; postglenoid process slightly more robust than in examples of P. harrisonensis; orbits slightly oval in outline, axis anteroposterior to skull, looking forward and outward; malar robust, inferior border slightly arched; external auditory meatus opening more outwardly than posteriorly.
MANDIBLE: Unknown. DENTITION: Series slightly longer and premolars larger than examples of P. harrisonensis; premolars set at a slight angle to alveolar border. LIMBS:Unknown. |
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, Carroll 1988, Nowak 1999, Lander 1998 | |||||
Age range: Harrisonian or 24.80000 to 18.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Harrisonian | USA (South Dakota) | Eporeodon relictus (type locality: 17743) |