TABLE 2 in Early Oligocene palaeoenvironment and palaeoclimate of the eastern periphery of the North Sea based on high-resolution palynological studies of the Grabówka PIG- 1 borehole, northern Poland

TABLE 2. — Freshwater and brackish algae, recorded in samples from the Grabówka PIG-1 borehole. Botanical affinity and indication according to Kadłubowska (1984), Krutzsch & Pacltová (1990), Grabowska (1996a), van Geel & Grenfell (1996), and Worobiec (2010, 2011, 2014, and literature cited herein).
TaxonBotanical affinityIndicationAcritarcha indiff.unknownbrackish waters?Botryococcus braunii Kützing, 1849Dictyosphaeriaceae: Botryococcus braunii Kützing, 1849open water, fresh and brackish watersClosteritetrapidites sp.Closteriaceae: Closterium Nitzsch ex Ralfs, 1848oligo- to eutrophic fresh watersCrassosphaera sp.Chlorophyta?, Prasinophyta?brackish waters?Cymatiosphaera eupeplos (Valesi) Deflandre, 1954Prasinophyceaebrackish watersDiagonalites diagonalis Krutzsch & Pacltová, 1990Zygnemataceae: Mougeotia laetevirens (Braun) Wittrock, 1877 typeshallow, stagnant, oxygen-rich fresh waters, lake marginsMegatetrapidites megatetroides Krutzsch & Pacltová, 1990Zygnemataceae: Mougeotia Agardh, 1824shallow, stagnant, oxygen-rich fresh waters, lake marginsOvoidites elongatus (Hunger) Krutzsch, 1959Zygnemataceae: Spirogyra Link in Nees, 1820shallow, stagnant, oxygen-rich fresh waters, lake marginsOvoidites gracilis Krutzsch & Pacltová, 1990Zygnemataceae: Spirogyra Link in Nees, 1820shallow, stagnant, oxygen-rich fresh waters, lake marginsOvoidites grandis (Pocock) Zippi, 1998Zygnemataceae: Spirogyra Link in Nees, 1820shallow, stagnant, oxygen-rich fresh waters, lake marginsOvoidites ligneolus (Potonié) Tomson & Pflug, 1953Zygnemataceae: Spirogyra Link in Nees, 1820shallow, stagnant, oxygen-rich fresh waters, lake marginsOvoidites minoris Krutzsch & Pacltová, 1990Zygnemataceae: Spirogyra Link in Nees, 1820shallow, stagnant, oxygen-rich fresh waters, lake marginsPediastrum boryanum (Turpin) Meneghini, 1840Hydrodictyaceae: Pediastrum boryanum (Turpin) Meneghini, 1840eutrophic fresh waters, open water surfacePediastrum simplex Meyen, 1829Hydrodictyaceae: Pediastrum simplex Meyen, 1829eutrophic to mesotrophic fresh waters, open water surfacePediastrum sp.Hydrodictyaceae: Pediastrum Meyen, 1829eutrophic to mesotrophic fresh waters, open water surfacePlanctonites stellarius (Potonié) Krutzsch in Krutsch et al., 1960Zygnematales: desmidsfresh and probably brackish watersSigmopollis laevigatoides Krutzsch & Pacltová, 1990Chlorophyta?, other algae?eutrophic to mesotrophic open fresh watersSigmopollis pseudosetarius (Weyland & Pflug) Krutzsch & Pacltová, 1990Chlorophyta?, other algae?eutrophic to mesotrophic open fresh watersStigmozygodites sp.Zygnemataceae: Zygnema Agardh, 1824shallow, meso- to eutrophic, open fresh watersTetrapidites foveolatoides Krutzsch & Pacltová, 1990Zygnemataceae: Mougeotia Agardh, 1824shallow, stagnant, oxygen-rich fresh waters, lake marginsTetrapidites sp.Zygnemataceae: Mougeotia Agardh, 1824shallow, stagnant, oxygen-rich fresh waters, lake margins