†Gastrodonta evanstonensis sinclairi Cockerell 1912 (slug)
Gastropoda - Stylommatophora - Helicidae
Alternative combination: Grangerella sinclairi
Belongs to Gastrodonta evanstonensis according to Cockerell 1912
Sister taxa: none
Ecology: epifaunal
Distribution: found only at Discovery Site (Eocene of Wyoming)