Order
Cardiida
Cardiida
26 species in this taxon
order of bivalves Cardiida (Cardiida) is an order comprising closely related families of organisms. It contains 5 families with 26 known species. This includes the family groups Cardiidae, Donacidae, Psammobiidae, Semelidae, and Tellinidae. Among its members, 5 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Bivalvia (Bivalvia).