Hildebrand-Habel and Willems, 2003
From dinoflaj3
Hildebrand-Habel, T. and Willems, H., 2003: New calcareous dinoflagellates from the Palaeogene of the South Atlantic Ocean (DSDP Site 357, Rio Grande Rise). Journal of Micropalaeontology, v.18, pt.1, p.89-95.