Qaleruaqia, known only from the Aftenstjernesø Formation, Lauge Koch Land, North Greenland is considered the earliest fossil aculiferan.Beedham, G.E. & Trueman, E.R. 1967. The relationship of the mantle and shell of Polyplacophora in comparison with that of other Mollusca. Journal of Zoology 151, 215-231. The type species, Q. sodermanorum, was named and described in 2020.
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