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Mammacyon
Taxonomy
Mammacyon was named by Loomis (1936).
It was assigned to Amphicyonidae by Loomis (1936) and Carroll (1988); and to Temnocyoninae by Hunt (1998) and Hunt (2011).
It was assigned to Amphicyonidae by Loomis (1936) and Carroll (1988); and to Temnocyoninae by Hunt (1998) and Hunt (2011).
Species
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.
G. †Mammacyon Loomis 1936
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†Mammacyon ferocior Hunt, Jr. 2011
†Mammacyon obtusidens Loomis 1936
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. M. Hunt 2011 | Distinguished from Temno-
cyon by absence of the m1 metaconid and different M1 and P4 proportions (table 6, ratios A/B, C/D); from Temnocyon, Rudio- cyon, and Delotrochanter by a more elongate m2 (ratio E/F); and from Delotrochanter by M1 proportions (ratio A/B), by P3/p3 with- out posterior accessory cusp, by p4 with labially (not centrally) placed posterior ac- cessory cusp, by a sinuous (not straight) labial cingulum on m1, and by proportions of p2–4 (short broad p2–3 in Delotrochanter, longer narrow p2–3 in Mammacyon). Mam- macyon evolves the most extreme form of crushing P4–M1 of the subfamily. See tables 1–5. |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Lillegraven 1979, Ji et al. 2002, Hunt 1998, Carroll 1988 | |||||
Age range: base of the Arikareean to the top of the Harrisonian or 29.50000 to 18.50000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bartonian - Rupelian | Mexico (Oaxaca) | M. sp. (166797) | |
| Geringian | USA (South Dakota) | M. sp. (17608) | |
| Arikareean | USA (South Dakota) | M. obtusidens (17442) | |
| Monroecreekian | USA (South Dakota) | Temnocyon percussor (17554) | |
| Monroecreekian | USA (Nebraska) | M. sp. (17565) | |
| Harrisonian | USA (Florida) | M. obtusidens (17837) Temnocyoninae indet. (18557) | |
| Harrisonian | USA (Wyoming) | M. sp. (17794) |