Further Interpretation of Wodehouseia spinata Stanley from the Late Maastrichtian of the Far East (China)

摘要: Dispersed pollen grains Wodehouseia spinata Stanley of unknown botanical affinity from the Maastrichtian Amur River Region, Far East are studied using transmitted light, scanning and transmission electron microscopy. The was probably produced by wetland or aquatic plants, adapted to a sudden change in water regime during vegetation season. pattern exine sculpture sporoderm ultrastructure suggests that insects contributed pollination. flange unevenly thickened endexine could facilitate harmomegathy. A tetragonal rhomboidal tetrad type seems be most logical for pollen. infratectum structure should placed within an advanced group eudicots.