Family Eulimidae Philippi, 1853
Remarks. This family is extremely difficult to differentiate taxonomically based upon shell morphology as pointed out by Bouchet & Warén (1986). In most cases the higher classification may not be solved without knowledge of the soft parts and/or colouration of the shell, both features not usually preserved in the fossil record. As a consequence the generic assignment of the following species may never be more than tentative.