After McKenna & Bell, 1997, with recent species from Nowak, 1991

<==o Nannosciurini Forsyth Major, 1893 (Oriental tree squirrels; kääpiöoravat) [taxonomic history]
   |--o Dremomys Heude, 1898; ?U.Mioc.-R. SEAs. (Red-cheeked Squirrels)?
   |  |-- D. lokriah (orangebellied or Himalayan ground squirrel)
   |  |-- D. pernyi (perny's ground squirrel)
   |  |-- D. rufigenis (redcheeked ground squirrel)
   |  |-- D. pyrrhomerus (redhipped ground squirrel)
   |  `-- D. everetti (borneonvuoriorava)
   |--o Callosciurus Gray, 1867 [incl. Baginia Gray, 1867; Erythrosciurus Gray, 1867; Heterosciurus Trouessart, 1880; Tomeutes Thomas, 1915; ?Rubrisciurus Ellerman, in Laurie & Hill, 1954] ?U.Mioc.-R. SEAs. ()?
   |  |-- ?C. orestes (bornean blackbanded squirrel)
   |  |?- (Rubrisciurus) rubriventer Ellerman, in Laurie & Hill, 1954 (Celebesian giant squirrel; punavatsaorava) [regocnized as independent genus by McKenna & Bell, 1997]
   |  `--o (Callosciurus) Gray, 1867 ()?
   |     |-- C. (C.) erythraeus (red-bellied squirrel)
   |     |-- C. (C.) flavimanus ()?[ssp.=>C. flavimanus]
   |     |-- C. (C.) finlaysonii (variable squirrel)
   |     |-- C. (C.) caniceps (borneonorava)
   |     |-- C. (C.) phayrei (phayre's squirrel)
   |     |-- C. (C.) inornatus (laotian squirrel)
   |     |-- C. (C.) pygerythrus (irawaddy squirrel)
   |     |-- C. (C.) ferrugineus ()?
   |     |-- C. (C.) quinquestriatus (anderson's or fivestriped squirrel)
   |     |-- C. (C.) prevostii (prevostinorava)
   |     |-- C. (C.) baluensis (kinabalu squirrel)
   |     |-- C. (C.) notatus (jauhobanaaniorava)
   |     |-- C. (C.) nigrovittatus (blackbanded squirrel)
   |     |-- C. (C.) albescens (pale squirrel)
   |     |-- C. (C.) adamsi (bornean earspot squirrel)
   |     |-- C. (C.) melanogaster (mentawi squirrel)
   |     `-- C. (C.) elbertae ()?
   |--o Tamiops J.A. Allen, 1906; ?U.Mioc.-R. As. ()?
   |  |-- T. macclellandi (himalajanviiruorava)
   |  |-- T. rodolphei (rodolph's or Cambodian striped squirrel)
   |  |-- T. swinhoei (swinhoe's striped squirrel)
   |  `-- T. maritimus (coastal striped squirrel)
   |--o Glyphotes Thomas, 1898 [incl. Hessonoglyphotes Moore, 1959] (Sculptor squirrels)
   |  |-- G. simus (red-bellied sculptor squirrel)
   |  `-- G. canalvus ()?
   |-- Rhinosciurus laticaudatus Gray, 1843 (Ant-eating squirrel; pitkäkuono-orava)
   |--o Lariscus Thomas & Wroughton, 1909 [Laria Gray, 1867 non Laria Scapoli, 1763, a beetle] [incl. Paralariscus Ellerman, 1947] ()?
   |  |-- L. insignis (kolmijuovaorava, kolmijuovamaaorava)
   |  |-- ?L. niobe (montane three-striped ground squirrel)
   |  |-- L. hosei (four-striped ground squirrel)
   |  `-- ?L. obscurus ()?
   |-- Menetes berdmorei Thomas, 1908 (Berdmore's, or Multistriped, Palm Squirrel, Siamese ground squirrel)
   |--o Prosciurillus Ellerman, 1947 (Celebesian tree squirrels)
   |  |-- P. murinus (north Sulawesi tree squirrel)
   |  |-- P. leucomus (sanghir Islands tree squirrel)
   |  |-- P. abstrusus (south Sulawesi tree squirrel)
   |  `-- ?P. weberi ()?
   |--o Exilisciurus Moore, 1958 (Patternless pygmy squirrels)
   |  |-- E. exilis (least pygmy squirrel)
   |  |-- E. whiteheadi (tufted pygmy squirrel)
   |  `-- E. concinnus (philippine pygmy squirrel)
   |--o Sundasciurus Moore, 1958 [incl. Aletesciurus Moore, 1958] ()?
   |  |--o (Aletesciurus) Moore, 1958 ()?
   |  |  |-- S. (A.) philippinensis (philippines squirrel)
   |  |  |-- S. (A.) mindanensis (mindanao squirrel)
   |  |  |-- S. (A.) samarensis (samar squirrel)
   |  |  |-- S. (A.) davensis (davas squirrel)
   |  |  |-- S. (A.) steerii (steere's squirrel)
   |  |  |-- S. (A.) moellendorffi (mollendorff's squirrel)
   |  |  |-- S. (A.) juvencus (palawan squirrel)
   |  |  |-- S. (A.) hoogstraali (hoogstraal's squirrel)
   |  |  |-- S. (A.) rabori (rabor's squirrel)
   |  |  `-- S. (A.) hippurus (hevosenhäntöorava)
   |  `--o (Sundasciurus) Moore, 1958 ()?
   |     |-- S. (S.) brookei (brooke's squirrel)
   |     |-- S. (S.) lowii (lowinorava)
   |     |-- S. (S.) jentinki (jentink's squirrel)
   |     `-- S. (S.) tenuis (hoikkaorava)
   |-- Nannosciurus melanotis Trouessart, 1880 (Oriental pygmy squirrel, Oriental dwarf squirrel, black-eared pygmy squirrel; aasiankääpiöorava)
   `--o Hyosciurus Archbold & Tate, 1935 (Sulawesian long-nose squirrels)
      |-- H. heinrichi (celebesinpitkäkuonoorava)
      `?- H. ileile (northern long-nosed or pig squirrel)

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