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''Calyptraea chinensis'' occurs in Norht-West Africa, in the [[Mediterranean]], the [[North Sea]], the [[Black Sea]] and the [[Atlantic Ocean]] They can be found in littoral and sublittoral zones along sheltered, rocky shores and muddy or silty hard grounds, clinging to a hard substrate, such as stones, living oysters <ref>{{cite journal|last=Minchin|first=D.|coauthors=J.D. Nunn|title=Further Range Extensions of the Marine Gastropod Calyptraea chinensis (L.) in Ireland|journal=The Irish Naturalists' Journal|year=2006|month=April|volume=28|issue=5|pages=200-203|url=http://www.jstor.org/pss/25536712|accessdate=2010-06-04}}</ref> and other shells. It also occurs on the northern and western coasts of Britain and Ireland, but is absent from the [[North Sea]] and the [[English Channel]].
''Calyptraea chinensis'' is known in fossil state from the [[Pliocene]] and the Early [[Pleistocene]]. <ref> [http://www.jstor.org/pss/2416942 Norton P.E.P., ''Marine Molluscan Assemblages in the Early Pleistocene of Sidestrand, Bramerton and the Royal Society Borehole at Ludham, Norfolk'', Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, Vol. 253, No. 784 (Dec. 21, 1967), pp. 161-200] </ref>
==References==
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