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]
^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.
^John S. Peel (2020). "The oldest palaeoloricate mollusc (Cambrian Series 2, Stage 4; North Greenland) and its bearing on aculiferan evolution". Bulletin of Geosciences. 95 (2): 127–144. doi:10.3140/bull.geosci.1779.
Aculifera (older name: Amphineura) is a proposed clade of molluscs incorporating those groups that have no conch or shell, that is, the Polyplacophora...
tusk shells, ammonites, and monoplacophorans. The other subphylum is Aculifera. Non-monoplacophoran conchiferans emerged within the once-widespread Monoplacophora...
African corinnid sac spiders containing the single species, Griswoldella aculifera. It was first described by C. R. Haddad in 2021, and it has only been...
in the family Mecynostomidae. Contains the following species: Childia aculifera Nilsson, Wallberg & Jondelius, 2011 Childia brachyposthium (Westblad 1942)...
Amphineura is a synonym of: Aculifera Polyplacophora This disambiguation page lists articles associated with the title Amphineura. If an internal link...
collects as water flows over the gills of these organisms. Aculifera In the aculifera the hypobranchial glands are referred to as "mucus tracts" and...
As of April 2019[update] it contains twenty-seven species: Aculepeira aculifera (O. Pickard-Cambridge, 1889) – USA to Guatemala Aculepeira albovittata...
Molecular and fossil evidence seemed to put Aplacophorans in the clade Aculifera, as a sister group to Polyplacophora. The discovery of Kulindroplax in...
relatives of Cephalopoda or as a sister group to Polyplacophora in the clade Aculifera. Both molecular and fossil evidence appeared to support the last hypothesis...
Stage 4 Aftenstjernesø Formation Greenland A member of the stem group of Aculifera. Holoornatus Gen. et sp. nov In press Zhang et al. Cambrian (Fortunian)...
Belle, R. A. (1981). Catalogue of Fossil Chitons. ISBN 90 6279 018 6. "Aculifera". Palaeos. Retrieved 21 November 2012. Donovan, S. K.; Sutton, M. D.;...
Halanych, Kenneth M. (2019). "Phylogenomics of Aplacophora (Mollusca, Aculifera) and a solenogaster without a foot". Proceedings of the Royal Society...
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