†Neptunea alaquaensis Mansfield 1935 (snail)
Belongs to Neptunea according to E. J. Petuch 1988
Sister taxa: Neptunea (Neptunea), Neptunea (Sulcosipho), Neptunea altispira, Neptunea despecta, Neptunea lyrata, Neptunea stonei
Ecology: epifaunal