F. T.  Fürsich, ?Preserved life positions of some Jurassic bivalves?, Paläontologische Zeitschrift, vol. 54, pp. 289-300, 1980.

F. T.  Fürsich, ?Preserved life positions of some Jurassic bivalves?, Paläontologische Zeitschrift, vol. 54, pp. 289-300, 1980.