Mammalia - Rodentia - Sciuridae
Full reference: Z. Qiu and G. Storch. 2000. The early Pliocene Micromammalian Fauna of Bilike, Inner Mongolia, China (Mammalia: Lipotyphla, Chiroptera, Rodentia, Lagomorpha). Senckenbergiana lethaea 80(1):173-229
Parent taxon: Sciuridae according to Z. Qiu and G. Storch 2000
Sister taxa: Albanensia, Arctomyoides, Blackiini, Callosciurini, Cedromus, Cynomyoides, Douglassciurus, Forsythia, Funambulini, Heteroxerus, Marmotini, Miosciurus, Miospermophilus, Nototamias, Oligosciurus, Oligospermophilus, Paenemarmota, Palaearctomys, Palaeosciurus, Parapaenemarmota, Paratamias, Petauristodon, Pliopetaurista, Pliopetes, Pliosciuropterus, Protosciurus, Protospermophilus, Protoxerini, Pteromyinae, Ratufini, Sciurillus, Sciurini, Sciurion, Sciurotamias, Similisciurus, Tamiasciurini, Vulcanisciurus, Xerini
Subtaxa: Prospermophilus orientalis
Type: Spermophilus orientalis
Ecology: scansorial granivore-frugivore