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The hexactinellid sponge genus Becksia Schlüter, 1868 from the campanian of the NW Münsterland | (upper cretaceous, NW Germany) | Gasse, Wolfgang; Göcke, Rudolf; Hilpert, Karl-Heinz | 1991 | |
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Fossil and recent sponges | [proceedings of a symposium held Sept. 26 - 28, 1988, Berlin] | Reitner, Joachim | 1991 |
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