Receptaculieten, merkwaardige fossielen uit het Groninger Keileem
Grondboor & Hamer , Volume 34 - Issue 6 p. 191- 200
In the present paper the main conclusions are summarised of a study on the receptaculite Tetragonis sulcata d'Eichwald 1860 and the paleobiology of receptaculites in general (BRUMMER, 1979). In addition, the significance of this fossil and the 'Ostseekalk' in which it is found is discussed with respect to its erratic nature.
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