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Keywords from Image Description:
FMIB Development of the tube in the tuped operculates .jpeg Development of the tube in the tuped operculates Pterocycus rapestris Bens Opisthoporus birostris Pfr Spiraculum travancoricum Bedd Rhiostoma housei Pfr Subject Pterocycus Opisthoporus Spiraculum Rhiostoma Tag Mollusks Cite book Molluscs Brachiopods Recent Brachiopods