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Taxonomy
Tamias was named by Illinger (1811). It is extant.
It was assigned to Agilia by Illiger (1811); to Sciurina by Gray (1825); to Sciurinae by Hay (1902); to Tamiini by de Bruijn et al. (1980); to Sciuridae by Illinger (1811), Bryant (1945), Ray (1965), Wilson (1967), Kurten and Anderson (1980) and McKenna and Bell (1997); and to Marmotini by Mercer and Roth (2003).
It was assigned to Agilia by Illiger (1811); to Sciurina by Gray (1825); to Sciurinae by Hay (1902); to Tamiini by de Bruijn et al. (1980); to Sciuridae by Illinger (1811), Bryant (1945), Ray (1965), Wilson (1967), Kurten and Anderson (1980) and McKenna and Bell (1997); and to Marmotini by Mercer and Roth (2003).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1811 | Tamias Illiger p. 83 |
| 1811 | Tamias Illinger |
| 1825 | Tamia Gray p. 342 |
| 1902 | Tamias Hay p. 720 |
| 1945 | Tamias Bryant p. 371 |
| 1965 | Tamias Ray |
| 1967 | Tamias Wilson p. 208 |
| 1980 | Tamias Kurten and Anderson p. 220 |
| 1980 | Tamias de Bruijn et al. p. 255 |
| 1997 | Tamias McKenna and Bell |
| 2003 | Tamias Mercer and Roth |
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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. Tamias Illinger 1811 [chipmunk]
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†Tamias aristus Ray 1965
†Tamias ateles Hall 1930
†Tamias eviensis de Bruijn et al. 1980
†Tamias laevidens Cope 1869
Tamias striatus Linnaeus 1758 [eastern chipmunk]
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Invalid names: Sciurus lysteri Richardson 1829 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. D. Bryant 1945 | Zygomatic plate slants upward at an angle of about 45º to basicranial axis and is more nearly horizontal than in other sciurids; in correlation with this the zygoma is less concave dorsally than in other squirrels, infraorbital foramen pierces zygomatic plate, and infraorbital canal is absent. Infraorbital foramen relatively larger, probably in correlation with origin of ventral head of maxillonasalis muscle (see page 314), and more nearly circular than in other sciurids. Notches in zygomatic plates opposite P4 or occasionally oppo- site anterior edge of M1; width of plates between zygomatic notches and infraorbital foramina correspondingly narrow. Anterior cranial fossa larger than that in terrestrial sciurids, except Otospermophilus and Callospermophilus; interorbital region correspondingly broad. Cranium narrow, slightly inflated, and smoothly rounded. Dorsal outline of skull less convex than in other squirrels except Marmota. Cheek teeth low-crowned (see table 1); ectolophids low and submarginal; prominent mesoconid present on m1 and m2. Form of baculum distinctive (see page 306). |