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Barnich, Ruth; Dietrich, Anna; Hager, Tatjana; Fiege, Dieter. (2017). On the genera Malmgrenia McIntosh, 1874 and Pettibonesia Nemésio, 2006 in the Northeast Atlantic and Mediterranean Sea, with descriptions of two new species (Polychaeta: Polynoidae). Marine Biodiversity. [efirst, 12 pages].