| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Urocitellus was named by Obolenskij (1927). It is extant.
It was assigned to Marmotini by Helgen et al. (2009).
It was assigned to Marmotini by Helgen et al. (2009).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1817 | Anisonyx Rafinesque |
| 1927 | Urocitellus Obolenskij |
| 2009 | Urocitellus 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.
G. Urocitellus Obolenskij 1927 [Holarctic ground squirrel]
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Urocitellus elegans Kennicott 1863 [Wyoming ground squirrel]
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Invalid names: Citellus kimballensis Kent 1967 [synonym]
Urocitellus parryii Richardson 1825 [arctic ground squirrel]
Urocitellus richardsonii Sabine 1822
Urocitellus townsendii Bachman 1839 [Townsend's ground squirrel]
Invalid names: Anisonyx Rafinesque 1817 [replaced]
Diagnosis
No diagnoses are available
Measurements
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Lillegraven 1979, Carroll 1988, Ji et al. 2002, Nowak 1991 | |||||
Age range
Maximum range based only on fossils: base of the Middle Pleistocene to the top of the Holocene or 0.77400 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 0.3 Ma
Minimum age of oldest fossil (stem group age): 0.3 Ma
Collections (42 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Pleistocene | USA (California) | Urocitellus beldingi (183462) | |
| Irvingtonian | Canada (Yukon) | Spermophilus parryii (20434 20436) | |
| Irvingtonian | USA (Kansas) | Citellus richardsonii (20165 20301 20332 20391 20516) Spermophilus richardsonii (20293 20312 20352 20553 20567) | |
| Irvingtonian | USA (Colorado) | Spermophilus elegans (20410 20477) Spermophilus sp. (20559) | |
| Irvingtonian | Canada (Alberta) | Spermophilus richardsonii (20529) | |
| Irvingtonian | USA (Texas) | Spermophilus elegans (20163 20451) | |
| Irvingtonian | USA (Oklahoma) | Citellus richardsonii (20309) | |
| Irvingtonian | USA (Nebraska) | Spermophilus kimballensis (20380) Spermophilus richardsonii (20347 20376 20500 20523) | |
| Middle Pleistocene | USA (Colorado) | Spermophilus richardsonii (20359 20369) | |
| Middle Pleistocene | Canada (Yukon) | Spermophilus parryii (74336) | |
| Late/Upper Pleistocene (interglacial) | Canada (Saskatchewan) | Spermophilus richardsonii (20635) | |
| Late/Upper Pleistocene (interglacial) | Canada (Alberta) | Citellus richardsonii (20615) | |
| Late/Upper Pleistocene (interglacial) | Canada (Yukon) | Spermophilus parryii (20626 20627) | |
| Late/Upper Pleistocene (high glacial) | USA (Nebraska) | Spermophilus richardsonii (93179) | |
| Late/Upper Pleistocene | USA (Montana) | Spermophilus richardsonii (162132) | |
| Late/Upper Pleistocene (late glacial) | USA (Colorado) | Spermophilus richardsonii (74953 74954) | |
| Late/Upper Pleistocene - Holocene (late glacial) | USA (Nevada) | Spermophilus townsendii (93291) | |
| Late/Upper Pleistocene - Holocene | USA (Utah) | Spermophilus townsendii (93326) | |
| Holocene | Canada (Northwest Territories) | Spermophilus parryii (228492) Urocitellus parryii (228921) | |
| Holocene | Canada (Yukon) | Urocitellus parryii (228443) | |
| Holocene | Russian Federation | Urocitellus undulatus (171637) |