Table 1. Geographic and ecological information for extant species documented for microwear on upper molars; references are for information about habitat and diet.

Species	Number of specimens studied	Country of origin of specimens	Habitat	Dietary habits	References

Callosciurus finlaysonii	9	Thailand	Lowland and montane forest	Fruits, nuts, seeds, flowers, vegetation, insects, eggs	Nowak 1999, Corlett 1998
Callosciurus prevostii	7	Malaysia	Dense rainforest	Fruit mainly, insects	Lekagul and McNeely 1988
Ratufa sp.	2	India, Malaysia	Forest canopy	Fruits, nuts, bark, insects, eggs	Nowak 1999, Corlett 1998
Ratufa affinis	1	Malaysia	Forest canopy	Fruits, seeds, leaves bark, insects, eggs	Payne et al. 1985, Nowak 1999, Corlett 1998
Ratufa bicolor	3	India, Malaysia	Forest canopy	Fruit preferentially, nuts, bark, insects, eggs	Nowak 1999, Corlett 1998
Ratufa indica	1	India	Forest canopy	Fruit preferentially, nuts, bark, insects, eggs	Nowak 1999, Corlett 1998
Spermophilopsis leptodactylus	1	Iran	Sandy desert	Fruits, seeds, bulbs, leaves, insects	Nowak 1999
Spermophilus annulatus	11	Mexico, Jalisco and Colima	Tropical deciduous forest; rocky areas	Fruits, nuts; also insects	Best 1995
Spermophilus variegatus	18	Mexico, USA	Rocky canyons	Seeds, fruits, nuts, leaves; also invertebrates, meat	Oaks et al. 1987

Habitat

Callosciurus prevostii