The Clams, Cockles, Geoduck, Oysters, Scallopss & Mussels (Bivalvia) - class

(Euheterodonta)
- subclass

(Heterodonta)
- subclass

(Ostreoida)
- subclass

(Palaeoheterodonta)
- subclass

(Protobranchia)
- subclass

(Pterioida)
- subclass

(Pteriomorphia)
- subclass

(Trigoniida)
- subclass

(Veneroida)
- subclass