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Taxonomy
Arctomys richardsonii was named by Sabine (1822). It is extant.
It was recombined as Citellus richardsonii by Gazin (1930); it was recombined as Spermophilus richardsonii by Kurten and Anderson (1980); it was recombined as Urocitellus richardsonii by Helgen et al. (2009).
It was recombined as Citellus richardsonii by Gazin (1930); it was recombined as Spermophilus richardsonii by Kurten and Anderson (1980); it was recombined as Urocitellus richardsonii by Helgen et al. (2009).
Synonymy list
| Year | Name and author |
|---|---|
| 1822 | Arctomys richardsonii Sabine |
| 1930 | Citellus richardsonii Gazin |
| 1980 | Spermophilus richardsonii Kurten and Anderson p. 214 |
| 2009 | Urocitellus richardsonii Helgen et al. |
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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.
Urocitellus richardsonii Sabine 1822
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1991, Lillegraven 1979, Ji et al. 2002, Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Middle Pleistocene to the top of the Late/Upper Pleistocene or 0.77400 to 0.01170 Ma
Collections (24 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Irvingtonian | USA (Kansas) | Citellus richardsonii (20165 20301 20332 20391 20516) Spermophilus richardsonii (20293 20312 20352 20553 20567) | |
| Irvingtonian | USA (Oklahoma) | Citellus richardsonii (20309) | |
| Irvingtonian | Canada (Alberta) | Spermophilus richardsonii (20529) | |
| Irvingtonian | USA (Nebraska) | Spermophilus richardsonii (20347 20376 20500 20523) | |
| Middle Pleistocene | USA (Colorado) | Spermophilus richardsonii (20359 20369) | |
| Late/Upper Pleistocene (interglacial) | Canada (Saskatchewan) | Spermophilus richardsonii (20635) | |
| Late/Upper Pleistocene (late glacial) | USA (Colorado) | Spermophilus richardsonii (74953 74954) | |
| Late/Upper Pleistocene (interglacial) | Canada (Alberta) | Citellus richardsonii (20615) | |
| Late/Upper Pleistocene (high glacial) | USA (Nebraska) | Spermophilus richardsonii (93179) | |
| Late/Upper Pleistocene | USA (Montana) | Spermophilus richardsonii (162132) |