Conchifera
Conchifera
Taxonomic term for shell-bearing molluscs
Conchifera is a subphylum of the phylum Mollusca. It comprises all of the shell-bearing classes of molluscs, such as clams, tusk shells, ammonites, and monoplacophorans. The other subphylum is Aculifera.[1] Non-monoplacophoran conchiferans emerged within the once-widespread Monoplacophora. The only descendant which retains its ancestral shape is the Tryblidiida.
This taxonomic term is used mostly by paleontologists, and not by scientists who study the living molluscs.