Tynni, 1982
From dinoflaj2
Tynni, R., 1982: On Paleozoic microfossils in clastic dykes on the Åland Islands and in the core samples of Lumparn. In: Bergman, L., Tynni, R. and Winterhalter, B., Paleozoic sediments in the Rapakivi area of the Åland Islands; Geological Survey of Finland, Bulletin, no.317, p.35-94, pl.1-20.
