Age determination: doi:10.1594/PANGAEA.740061. Method: Faegri and Iverson (1964): KOH treatment, then HF followed by acetolysis. Mounted in safranin stained glycerine jelly. Samples with high siliceous content were treated with HF for longer than recommended by Faegri and Iverson i.e. 1 hour at 95° C in 40% HF.The EPD (http://www.europeanpollendatabase.net) accepted species name is given in the parameter comment. This dataset was archived on 2010-05-11 from the EPD database.