Miospore assemblages assigned to the PL, NV, CM and Pu Zones have been recorded from a number of boreholes which penetrated Upper Devonian and Lower Carboniferous (Tournaisian and early Visean) rocks in central Ireland. The palynomorphs occur in both marine and non-marine successions, permitting correlation between these two facies. The boundary between the PC and CM Zones has been located within three sections. The palynological data suggest that the base of the marine sequence is of mid-Tournaisian (Tn2) age at Ballyvergin in the south of the area described and of uppermost Tournaisian (Tn3) or earliest Visean age around Clew Bay in the northwest. © 1981.
Keegan, J. B. (1981). Palynological correlation of the upper devonian and lower carboniferous in central Ireland. Review of Palaeobotany and Palynology, 34(1), 99–105. https://doi.org/10.1016/0034-6667(81)90067-1