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Taxonomy
Palaearctomys was named by Douglass (1903). It is not extant.
It was assigned to Sciuridae by Douglass (1903), Bryant (1945) and McKenna and Bell (1997).
It was assigned to Sciuridae by Douglass (1903), Bryant (1945) and McKenna and Bell (1997).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1903 | Palaearctomys Douglass |
| 1945 | Palaearctomys Bryant p. 359 |
| 1997 | Palaearctomys McKenna and Bell |
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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. †Palaearctomys Douglass 1903
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†Palaearctomys macrorhinus Douglass 1903
†Palaearctomys montanus Douglass 1903
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. D. Bryant 1945 | Skull larger than that of other North American sciurids, except Marmota. Rostrum massive; cranium markedly flattened and sagittal crest prominent; parietal ridges fuse at level of posterior ends of temporal fossae; two chambers (postpalatine vacuities) open posteriorly below posterior end of hard palate. Incisors large and strong, with many longitudinal striations; upper incisors with two or more distinct grooves on anterior surface; cheek teeth resemble those of Marmota but are more brachydont and are smaller in proportion to the size of the skull. |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Lillegraven 1979, Ji et al. 2002, Hendy et al. 2009, Nowak 1991 | |||||
Collections
No collection or age range data are available