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A.  Seilacher, ?"Hammer oysters" as secondary soft bottom dwellers?, Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, vol. 164, pp. 245-250, 1982.

A.  Seilacher, ?"Hammer oysters" as secondary soft bottom dwellers?, Neues Jahrbuch für Geologie und Paläontologie Abhandlungen, vol. 164, pp. 245-250, 1982.