Hildebrand-Habel and Willems, 2004
From dinoflaj3
Hildebrand-Habel, T. and Willems, H., 2004: New calcareous dinoflagellates (Calciodinelloideae) from the Middle Coniacian to Upper Santonian chalks of Lägerdorf (northern Germany). Journal of Micropalaeontology, v.23, p.181-190, pl.1-2.