Mollusca

Introduction: Mollusca

Description of Mollusca

Mollusca: A phylum of the subkingdom Metazoa with soft, unsegmented bodies, consisting of an anterior head, a dorsal visceral mass and a ventral foot. Most forms are enclosed in a protective calcareous shell. Mollusca includes the classes Gastropoda (snails, whelks, slugs), Pelecypoda (oysters, clams, mussels), Cephalopoda (squids, octopuses), Amphineura (chitons), Scaphopoda (tooth shells), and the class of primitive metameric mollusks, Monoplacophora. [L. mollusca, a nut with a thin shell, fr. mollis, soft]
Source: Stedman's Medical Spellchecker, © 2006 Lippincott Williams & Wilkins. All rights reserved.

Mollusca: phylum of the kingdom Metazoa; organisms have soft, unsegmented bodies with an anterior head, a dorsal visceral mass, and a ventral foot; most are encased in a protective calcareous shell; includes the classes Gastropoda, Bivalvia, Cephalopoda, Aplacophora, Scaphopoda, Polyplacophora, and Monoplacophora.
Source: CRISP

Mollusca: 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.
Source: MeSH 2007

Terms associated with Mollusca:

Related Topics

• Shellfish

Source - MeSH 2007

More specific terms for Mollusca:

• Cephalopoda
• Gastropoda
• Bivalvia
• Polyplacophora

Source - MeSH 2007

• Bivalvia
• Cephalopoda
• Gastropoda

Source - CRISP

Broader terms for Mollusca

• Invertebrates

Source - MeSH 2007

• Invertebrata

Source - CRISP

Hierarchical classifications of Mollusca

The following list attempts to classify Mollusca into categories where each line is subset of the next.

MeSH 2007 Hierarchy:

• Animals
  • Invertebrates
    • Mollusca

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