Panopea glycimerisPanopea glycimeris is a species of large marine bivalve mollusc in the family Hiatellidae.The fossil record of this species dates back to the Miocene of Italy.DescriptionShells of Panopea glycimeris can reach a size of. The two valves are similars and have a rusty appearance. The diameter of the siphonal apertures ranges between.DistributionThis species can be found in the Mediterranean Sea and in the Northwestern coast of Africa, on sand bottom at depths of. It is actually rare in the Mediterranean Sea.