Roncaglia and Corradini, 1997
From dinoflaj2
Roncaglia, L. and Corradini, D., 1997: Correlation of key dinoflagellate events with calcareous nannoplankton and planktonic foraminiferal zones in the Solignano Formation (Maastrichtian, Late Cretaceous) northern Apennines, Italy. Review of Palaeobotany and Palynology, v.97, p.177-196, pl.1-5.
