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The top documents tagged [ctenidia gills]
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Molluscs. Introduction Introduction. One of the largest animal phyla after the arthropods. 50,000 ‑ 100,000 living species, 35,000 extinct. Mollusca means
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Phylum Mollusca Class Aplacophora - Small + wormlike, primitive (no shell) Class Monoplacophora - Deep sea, cap-like shell; segmented? Class Polyplacophora
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