Helix carinatus
Mourlonia angulata
Mourlonia antrina
Mourlonia confertinemilata
Mourlonia hotzi
Mourlonia lirata
Mourlonia macrostoma
Mourlonia minuta
Mourlonia northviewensis
Mourlonia reloba
Mourlonia venusta
Pleurotomaria expansa
Pleurotomaria plena
Pleurotomaria rugulata
Pleurotomaria textiligera
Pleurotomaria turbinea
Ptychomphalus missouriensis