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Genus Tridacna
- type genus of the family Tridacnidae: giant clams
Genus Cardium
- type genus of the family Cardiidae: cockles
Genus Ostrea
- type genus of the family Ostreidae
Genus Anomia
- type genus of the family Anomiidae: saddle oysters
Genus Arca
- type genus of the family Arcidae: ark shells and blood clams
Genus Mytilus
- type genus of the family Mytilidae: smooth-shelled marine mussels
Genus Unio
- type genus of the family Unionidae