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Tamias (chipmunk)

Mammalia - Rodentia - Sciuridae

Synonymy list
YearName and author
1811Tamias Illiger p. 83
1811Tamias Illinger
1825Tamia Gray p. 342
1902Tamias Hay p. 720
1945Tamias Bryant p. 371
1965Tamias Ray
1967Tamias Wilson p. 208
1980Tamias Kurten and Anderson p. 220
1980Tamias de Bruijn et al. p. 255
1997Tamias McKenna and Bell
2003Tamias Mercer and Roth

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Synapsida()
RankNameAuthor
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
EuarchontogliresMurphy et al. 2001
Glires()
orderRodentia
superfamilySciuroidea
familySciuridae
tribeMarmotini
genusTamiasIllinger 1811

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.

Diagnosis
ReferenceDiagnosis
M. D. Bryant 1945Zygomatic 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).