MeSH definition : A phylum of the kingdom Metazoa. Mollusca have soft, unsegmented bodies with an anterior
head, a dorsal visceral mass, and a ventral foot. Most are encased in a protective
calcareous shell. It includes the classes GASTROPODA; BIVALVIA; CEPHALOPODA; Aplacophora;
Scaphopoda; Polyplacophora; and Monoplacophora.;
A phylum of the kingdom Metazoa. Mollusca have soft, unsegmented bodies with an anterior
head, a dorsal visceral mass, and a ventral foot. Most are encased in a protective
calcareous shell. It includes the classes GASTROPODA; BIVALVIA; CEPHALOPODA; Aplacophora;
Scaphopoda; Polyplacophora; and Monoplacophora.