†Zefallacia benesulcata Powell and Bartrum 1929 (cerith snail)
Gastropoda - Sorbeoconcha - Cerithiidae
Belongs to Zefallacia according to A. G. Beu et al. 1990
Sister taxa: Zefallacia chattonensis, Zefallacia lawsi, Zefallacia ruamahanga
Ecology: epifaunal grazer