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• Chitin — Not to be confused with chiton. Structure of the chitin molecule, showing two of the N acetylglucosamine units that repeat to form long chains in β 1,4 linkage. Chitin (C8H13O5N)n ( …   Wikipedia

• Orthocerida — Temporal range: Lower Ordovician–Upper Triassic …   Wikipedia

• Neocephalopoda — Neocephalopods Scientific classification Kingdom: Animalia Phylum …   Wikipedia

• Debate about Cambrian Lophotrochozoans — Since 1990 there has been intense debate among paleontologists about the evolution in the Early Cambrian period of the super phylum Lophotrochozoa, which is thought to include the modern molluscs, annelid worms and brachiopods, as well as their… …   Wikipedia

• Bivalva — Bivalvia Bivalves …   Wikipédia en Français

• Bivalve — Bivalvia Bivalves …   Wikipédia en Français

• Bivalves — Bivalvia Bivalves …   Wikipédia en Français

• Lamellibranche — Bivalvia Bivalves …   Wikipédia en Français

• Lamellibranches — Bivalvia Bivalves …   Wikipédia en Français

• Lamellibranchia — Bivalvia Bivalves …   Wikipédia en Français

• Pelecypoda — Bivalvia Bivalves …   Wikipédia en Français