Mammalia - Rodentia - Sciuridae

Full reference: M. D. Bryant. 1945. Phylogeny of Nearctic Sciuridae. American Midland Naturalist 33(2):257-390

Parent taxon: Marmotini according to C. C. Black 1963

See also Bryant 1945 and McKenna and Bell 1997

Sister taxa: Ammospermophilus, Callospermophilus, Citellus, Cynomys, Eutamias, Ictidomys, Marmota, Miospermophilus, Neotamias, Notocitellus, Otospermophilus, Paenemarmota, Palaearctomys, Poliocitellus, Protospermophilus, Spermophilus, Tamias, Urocitellus, Xerospermophilus, Spermophilinus

Subtaxa: Arctomyoides arctomyoides

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Ecology: scansorial granivore-frugivore

Distribution: found only at Birch Creek (Mascall Formation) (Miocene of Oregon)

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Specimen images are retrieved through the ePANDDA API.