Aculifera

Aculifera; Temporal range: Early Cambrian –Present PreꞒ Ꞓ O S D C P T J K Pg N (Possible Ediacaran record)
	A polyplacophoran (chiton)
	The aplacophoran Epimenia
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Clade:	Aculifera; Hatschek, 1891
Classes
	†Mattheviidae; Polyplacophora; Aplacophora;

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.

Two Ediacaran species, Korifogrammia and Clementechiton, which were found in the Clemente Formation in Mexico, may resemble stem-group Aculiferans.^[2]

References

^ Sigwart, J. D.; Sutton, M. D. (Oct 2007). "Deep molluscan phylogeny: synthesis of palaeontological and neontological data". Proceedings of the Royal Society B: Biological Sciences. 274 (1624): 2413–2419. doi:10.1098/rspb.2007.0701. PMC 2274978. PMID 17652065. For a summary, see "The Mollusca". University of California Museum of Paleontology. Retrieved 2 October 2008.
^ Deep Time Analysis a Coherent View of the History of Life (by Mark A.S. McMenamin

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