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Visceroconcha

mollusk supraclass

Learn about this topic in these articles:

evolutionary development

  • organizational levels and body diagrams of mollusks
    In mollusk: Evolution and paleontology

    …and shell in the supraclass Visceroconcha, including the gastropods and the cephalopods; both share a posterior mantle cavity, lateral (or pleural) nerve cords medial to the dorsoventral musculature, and an antagonistic muscle system (see above Internal features: Muscles and tissues). The relation of the fossil order Bellerophontacea is controversial.

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