(Retusa) (Retusa) is a biological genus in the family Retusidae and order Cephalaspidea.
Retusa obtusa
Retusa montereyensis
Retusa xystrum
Retusa alba
Retusa mayoi
Retusa ovata
Retusa semen
Retusa truncatula
Retusa umbilicata
Retusa sulcata
Coleophysis
Pyrunculus
Retusa
Volvulella