Recent specimens of the endangered pearl mussel Pseudunio auricularius have been recorded in the past from two rivers in Great Britain: the river Clouden in Scotland and the river Wye in England. More material may be hiding among specimens of Margaritifera margaritifera in old collections.

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Nederlandse Malacologische Vereniging

H.K. Mienis. (2009). Nogmaals: Kwam de Rivierparelmossel Pseudunio auricularius recentelijk nog levend in Groot Brittannië voor?. Spirula, 366, 13–14.