Order
Chitonida
Chitonida
5 species in this taxon
order of molluscs Chitonida (Chitonida) is an order comprising closely related families of organisms. It contains 3 families with 5 known species. This includes the family groups Acanthochitonidae, Ischnochitonidae, and Tonicellidae. It belongs to Polyplacophora (Polyplacophora).