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Exoskeleton of newly discovered gastropod mollusk. Illustration of the Exoskeleton of newly discovered gastropod mollusk nsf gov jsp cntnid org NSF Zina Deretsky National Science Foundation inset after Haimin Yao et al PNAS January PDUSGov Original upload log page en Exoskeletonofnewlydiscoveredgastropodmollusk RichardMcCoy