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Clade of molluscs From Wikipedia, the free encyclopedia
Aculifera (older name: Amphineura) is a proposed clade of molluscs incorporating those groups that have no conch or shell, that is, the Polyplacophora, Caudofoveata (=Chaetodermomorpha) and Solenogastres (=Neomeniomorpha).[1] It is sister to the Conchifera.
The oldest known aculiferan is Qaleruaqia, which was found in the Aftenstjernesø Formation in Greenland, which dates back to the Cambrian Stage 4.[2]
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