
Aculifera is a proposed clade of molluscs incorporating those groups that have no conch or shell, that is, the Polyplacophora, Caudofoveata (=Chaetodermomorpha) and Solenogastres (=Neomeniomorpha). It is sister to the Conchifera. ...
Found on
http://en.wikipedia.org/wiki/Aculifera

(from the article `mollusk`) ...and Aplacophora (caudofoveates and solenogasters) within one subphylum (side by side with the subphylum Conchifera), is misleading and ...
Found on
http://www.britannica.com/eb/a-z/a/15
No exact match found.