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Cedaromys
Taxonomy
Cedaromys was named by Eaton and Cifelli (2001). Its type is Paracimexomys bestia.
It was assigned to Cimolodonta by Eaton and Cifelli (2001), Kielan-Jaworowska et al. (2004) and Eaton (2009).
It was assigned to Cimolodonta by Eaton and Cifelli (2001), Kielan-Jaworowska et al. (2004) and Eaton (2009).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2001 | Cedaromys Eaton and Cifelli pp. 484-485 figs. 12-13 |
| 2004 | Cedaromys Kielan-Jaworowska et al. pp. 254, 321 fig. 8.34K |
| 2009 | Cedaromys Eaton |
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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. †Cedaromys Eaton and Cifelli 2001
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†Cedaromys bestia Eaton and Nelson 1991
†Cedaromys minimus Eaton 2009
†Cedaromys parvus Eaton and Cifelli 2001
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. G. Eaton and R. L. Cifelli 2001 | Most similar to Bryceomys. Lower incisor covered with enamel, oval in cross section, slightly curved, with a spatulate wear facet. p4 is highly and symmetrically arched (H:L2 0.60), more arched than Bryceomys, with first serration strong and well-separated from the second. Shares with Eobaatar, Janumys, and Bryceomys asymmetric lower molars, with internal row shorter than external, and cusps of the internal row on m1 worn obliquely towards the central valley. Tendency for lower molar cusps to coalesce, particularly labial cusp row of m2. Lower molars broader relative to length than in Bryceomys. Cusps of the molars are more robust, proportionally less tall, and not as deeply divided as those of Bryceomys, particularly internal cusp rows of first molar. P4 with cusp formula 2:4, less than in Bryceomys, and higher rate of cusp climb (0.58-0.60) than Bryceomys, Dakotamys, and Janumys. Shares with Janumys lack of internal (3rd)cusp row on M1, and differs in this respect from Bryceomys, Paracimexomys, cf. Paracimexomys, or Dakotamys. |
Measurements
No measurements are available
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| Source: o = order, c = class, subp = subphylum | |||||
| References: Jenkins and Krause 1983, Hopson 1973, Hendy et al. 2009, Carroll 1988 | |||||
Age range: base of the Middle Cenomanian to the top of the Early/Lower Campanian or 99.60000 to 70.60000 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Albian - Early/Lower Cenomanian | USA (Idaho) | C. sp. (201911) | |
| Early/Lower Cenomanian | USA (Utah) | C. bestia (14402) C. bestia, C. parvus (14396 14398 14399 14403 14405) C. parvus (14397) Paracimexomys bestia (14406) Paracimexomys bestia, Ptilodontoidea indet. (14395) Paracimexomys sp. A, Paracimexomys sp. A (14407) | |
| Middle Cenomanian - Late/Upper Cenomanian | USA (Utah) | C. minimus (73433) | |
| Coniacian - Santonian | USA (Utah) | C. sp. (14417) | |
| Early/Lower Campanian | USA (Utah) | C. hutchisoni, C. sp. (14421) C. sp. (14430) |