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Marshochoerus socialis
Taxonomy
Thinohyus socialis was named by Marsh (1875).
It was recombined as Perchoerus socialis by Hay (1902), Matthew (1909), Cope and Matthew (1915), Pearson (1923); it was recombined as Palaeochoerus socialis by Stevens et al. (1969); it was recombined as Cynorca sociale by Woodburne (1969), Wright and Eshelman (1987), Wright (1998), Albright (1999); it was recombined as Marshochoerus socialis by Prothero (2015), Prothero (2021).
It was recombined as Perchoerus socialis by Hay (1902), Matthew (1909), Cope and Matthew (1915), Pearson (1923); it was recombined as Palaeochoerus socialis by Stevens et al. (1969); it was recombined as Cynorca sociale by Woodburne (1969), Wright and Eshelman (1987), Wright (1998), Albright (1999); it was recombined as Marshochoerus socialis by Prothero (2015), Prothero (2021).
Synonymy list
| Year | Name and author |
|---|---|
| 1875 | Thinohyus socialis Marsh p. 249 |
| 1899 | Thinohyus socialis Stehlin |
| 1902 | Perchoerus socialis Hay p. 657 |
| 1905 | Thinohyus socialis Sinclair |
| 1907 | Thinohyus socialis Merriam and Sinclair |
| 1909 | Perchoerus socialis Matthew |
| 1915 | Perchoerus socialis Cope and Matthew pp. Plate CXIa |
| 1923 | Perchoerus socialis Pearson |
| 1969 | Palaeochoerus socialis Stevens et al. p. 58 |
| 1969 | Cynorca sociale Woodburne p. 289 |
| 1987 | Cynorca sociale Wright and Eshelman |
| 1998 | Cynorca sociale Wright |
| 1999 | Cynorca sociale Albright |
| 2015 | Marshochoerus socialis Prothero p. 252 fig. 20 |
| 2021 | Marshochoerus socialis Prothero p. 17 |
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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.
†Marshochoerus socialis Marsh 1875
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. O. Woodburne 1969 | Smallest species of genus; upper and lower molars not markedly expanded transversely and M' not reduced as in C. occidentale, new species; no strong postmetaconid crest on lower molars and dP4 as in C. proterva; differing from all other species in that P4 lacks a bicusped heel and P4 lacks a deep, trenchant, postprotoconal groove. Bases of molar protocones and hypocones acuminate lingually. | |
| D. R. Prothero 2015 | [Same as for genus] Smallest of all the hesperhyines (see Tables 5-8); narrow plesiochoanal fossa; retains P3 with a narrow lingual cingulum. |
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, Nowak 1991 | |||||
Age range: base of the Aquitanian to the top of the Hemingfordian or 23.04000 to 16.30000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Arikareean | USA (Oregon) | Palaeochoerus socialis (180202) | |
| late Late Arikareean | USA (Oregon) | Cynorca sociale (18013) | |
| Aquitanian | USA (Texas) | Cynorca sociale (18663) | |
| Burdigalian | USA (Delaware) | Cynorca sociale (18579) | |
| Hemingfordian | USA (Texas) | Tayassuidae indet. (18626) | |
| Hemingfordian | USA (Nevada) | Cynorca sociale (18962) | |
| Hemingfordian - Barstovian | USA (California) | Cynorca sociale (19478) |