Order
Arcida
Arcida
5 species in this taxon
order of molluscs Arcida (Arcida) is an order comprising closely related families of organisms. It contains 2 families with 5 known species. This includes the family groups Arcidae, and Glycymerididae. Among its members, 1 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Bivalvia (Bivalvia).