Class Scaphopoda Bronn, 1862 - tusk shells Order Gadilida Starobogatov, 1974 Suborder Gadilimorpha Steiner, 1992 Family Wemersoniellidae Scarabino, 1986 1 Genus Chistikovia Scarabino, 1995 2 Genus Wemersoniella Scarabino, 1986