Retirotundia

Citations total:
2
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Author - title
Year
details Middle Oligocene Germany Zippi,P.A. Freshwater algae from the Mattagami Formation (Albian) Ontario: Paleoecology, botanical affinities and systematic taxonomy 1998
original Middle Oligocene Germany Krutzsch,W. Atlas of the Middle and Upper Tertiary dispersed spores and pollen as well as the mikroplankton forms of northern central Europe. VII: Monoporate, monocolpate, longicolpate dicolpate an dephedroide (polyplicate) pollen forms. 1970