Frenelopsis alata and its microsporangiate and ovuliferous reproductive structures from the Cenomanian of Bohemia (Czech Republic, Central Europe).
Reference:
Kvacek,J. (2000)
Frenelopsis alata and its microsporangiate and ovuliferous reproductive structures from the Cenomanian of Bohemia (Czech Republic, Central Europe). Review of Palaeobotany and Palynology
Vol. 112 # 3 P. 51- 78