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Baiomys (pygmy mouse)
Taxonomy
Baiomys was named by True (1894). It is extant.
It was assigned to Cricetinae by Kurten and Anderson (1980); to Hesperomyini by Carranza-Castañeda and Walton (1992); and to Cricetidae by True (1894), McKenna and Bell (1997).
It was assigned to Cricetinae by Kurten and Anderson (1980); to Hesperomyini by Carranza-Castañeda and Walton (1992); and to Cricetidae by True (1894), McKenna and Bell (1997).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1894 | Baiomys True |
| 1980 | Baiomys Kurten and Anderson p. 247 |
| 1992 | Baiomys Carranza-Castañeda and Walton p. 79 |
| 1997 | Baiomys 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. Baiomys True 1894 [pygmy mouse]
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†Baiomys aquilonius Zakrzewski 1969
†Baiomys kolbi Hibbard 1952
†Baiomys mowi Albright 1999
†Baiomys rexroadensis Hibbard 1941
†Baiomys rexroadi Hibbard 1941
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. W. True 1894 | Ascending ramus of mandible short and erect. Condyle terminal. Coronoid process well developed, uncinate, and near the condyle. Size very small, tail short. Plantar tubercles, six. Soles hairy. With Vesperimus and Onychomys, this subgenus will form one section of the genus Sitomys. it is closerly allied to the former than to the latter. In Vesperimus, the nearest ally is S. (Vesperimus) michiganensis, which has many of the characteristics of S. taylori, but so far as regards the skull is typical of the subgenus to which it belongs. |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Lillegraven 1979, Nowak 1999, Hendy et al. 2009, Ji et al. 2002 | |||||
Age range: base of the Late/Upper Hemphillian to the top of the Early/Lower Pleistocene or 9.40000 to 0.77400 Ma
Collections (25 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Hemphillian | Mexico (Chihuahua) | Baiomys kolbi (18755) | |
| Late/Upper Hemphillian | USA (Nebraska) | Baiomys sp. (18359) | |
| Late/Upper Hemphillian | Mexico (Guanajuato) | Baiomys kolbi (18738) | |
| Blancan | USA (California) | Baiomys sp. (19736) | |
| Blancan | USA (New Mexico) | Baiomys sp. (19970) | |
| Blancan | Mexico (Chihuahua) | Baiomys kolbi (20069) | |
| Blancan | USA (Texas) | Baiomys rexroadi (20060) Baiomys sp. (20032) | |
| Blancan | USA (Kansas) | Baiomys rexroadi (19931 19935) Baiomys sawrockensis (19922) | |
| Blancan | USA (Arizona) | Baiomys sp. (19625 19627 19631 19634 19636 19656 19658) | |
| Blancan | USA (Idaho) | Baiomys aquilonius (19891 19903 19906) Baiomys sp. (19823) | |
| Early/Lower Pleistocene | USA (Florida) | Baiomys sp. (98313) | |
| Irvingtonian | USA (Florida) | Baiomys sp. (20385) | |
| Irvingtonian | USA (California) | Baiomys sp. (20125) |