CHARLES J. GEERTS
SHELLS & FOSSILS
ARCIDAE
GLYCYMERIDAE
MYTILIDAE
PECTINIDAE
ASTARTIDAE
LIMOPSIDAE
MACTRIDAE
SPONDYLIDAE
ANOMIIDAE
LIMIDAE
MESODESMATIDAE
TELLINIDAE
CARDIIDAE
LUCINIDAE
PETRICOLIDAE
TEREDINIDAE
CHAMIDAE
VENERIDAE
GLOSSIDAE