Phylum Mollusca Class Cephalopoda Subclass Nautiloidea The phylum Mollusca includes the familiar classes Gastropoda (snails), Pelecypoda (clams, oysters and scallops), and Cephalopoda (squids, octopuses, and the chambe

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• Biology
• Nautilus
• Septum
• Valhallites
• Evolutionary history of cephalopods
• Nautiloids
• Phyla
• Protostome