Smelror and Aarhus, 1989
From dinoflaj3
Smelror, M. and Aarhus, N., 1989: Emendation of the dinoflagellate cyst genus Crussolia Wolfard & van Erve 1981, and description of C. dalei n. sp. from the Callovian of Svalbard. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte, no.1, p.37-46.