Pecten flabelliformisPecten flabelliformis is an extinct species of large scallop or saltwater clam, marine bivalve mollusks in the family Pectinidae, the scallops.DescriptionPecten flabelliformis can reach a diameter of about.DistributionFossils of this species can be found in the Pleistocene – Pliocene marine strata of Greece, Romania, Italy, Cyprus, Hungary and Ukraine.