Bivalvia
Bivalves, of pelecypoda are the second largest class of mollusks. Their shells are composed of two pieces, or valves.
It is estimated to be 15,000 know bivalve species.
Bivalves, of pelecypoda are the second largest class of mollusks. Their shells are composed of two pieces, or valves.
It is estimated to be 15,000 know bivalve species.
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