CHARLES J. GEERTS
SHELLS & FOSSILS
MOLLUSCAN FAMILIES
| MARINE FAMILIES |
| CANCELLARIIDAE |
| CAPULIDAE |
| CARDIIDAE |
| CASSIDIDAE |
| CERITHIIDAE |
| CHAMIDAE |
| CHILODONTIDAE |
| COLUMBARIIDAE |
|
CYMATIIDAE(Ranellidae) |
| MACTRIDAE |
| MESODESMATIDAE |
| NUCULIDAE |
| PECTINIDAE |
| TRIGONIDAE |
| VASIDAE |