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Cricetops
Taxonomy
Cricetops was named by Matthew and Granger (1923). Its type is Cricetops dormitor.
It was assigned to Cricetopidae by Matthew and Granger (1923); and to Cricetopinae by McKenna and Bell (1997), Maridet and Ni (2013).
It was assigned to Cricetopidae by Matthew and Granger (1923); and to Cricetopinae by McKenna and Bell (1997), Maridet and Ni (2013).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1923 | Cricetops Matthew and Granger |
| 1997 | Cricetops McKenna and Bell p. 137 |
| 2013 | Cricetops Maridet and Ni |
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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. †Cricetops Matthew and Granger 1923
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†Cricetops auster Li et al. 2016
†Cricetops caducus Shevyreva 1967
†Cricetops dormitor Matthew and Granger 1923
†Cricetops minor Wang 1987
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. D. Matthew and W. Granger 1923 | Cheek teeth 3/3, the upper series decreasing in length and width from first to third, the lower series subequal and of nearly square outline. Brachyodont crowns, the cusps arranged in pairs, two pair each on Mm2 and Mm3, but a well-developed anterior pair on M1 and a rudimentary heel on m1. In the lower teeth the outer cusps tend to be crecentic, the inner are nearly round; the upper teeth reverse this arrangement. The skull is cricetoid in proportions, rather long and narrow, arches well preserved on the type and several other specimens show that the infraorbital foramen was round and of rather large size, resembling some of the dormice, e.g. Graphiurus, also Pseudosciurus and other Oligocene genera and, to a less extent, the Dipodidae, the masseteric scar on the zygoma wholly beneath it and defined by a clear-cut margin. |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1999, Ji et al. 2002, Carroll 1988, Lillegraven 1979, Hendy et al. 2009 | |||||
Age range: base of the Early/Lower Oligocene to the top of the Late/Upper Oligocene or 33.90000 to 23.04000 Ma
Collections (23 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Oligocene | Mongolia | C. dormitor (53979 175168) | |
| Early/Lower Oligocene | Mongolia (Övörkhangai) | C. dormitor (135791 175169 180953 180955 182131 187298 187301 201176 201191) | |
| Early/Lower Oligocene | China (Nei Mongol) | C. dormitor (175253 175387 175814 175815) C. dormitor, C. minor (175386) | |
| Early/Lower Oligocene | China (Yunnan) | C. sp. (175142) | |
| Early/Lower Oligocene | China (Xinjiang) | C. dormitor (174978 180951 180952) | |
| Late/Upper Oligocene | China (Nei Mongol) | C. dormitor (175408 175411) | |
| Late/Upper Oligocene | Kazakhstan (Aktyubinskaya) | C. affinis (73994) |