Bucefalo Palliani, R., Riding, J.B. and Torricelli, S., 1997b The dinoflagellate cyst Luehndea Morgenroth, 1970, emend. from the upper Pliensbachian (Lower Jurassic) of Hungary. Review of Palaeobotany and Palynology, v.96, p.113-120, pl.1-2.