Pectinida

order of molluscs Pectinida (Pectinida) is an order comprising closely related families of organisms. It contains 3 families with 16 known species. This includes the family groups Anomiidae, Pectinidae, and Spondylidae. Among its members, 1 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Bivalvia (Bivalvia).