|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|E. Schrank and M. S. Mahmoud 2002||Monoporate pollen grains. Pore formed by an irregular ring-shaped, narrow zone of collapse of the exine. Pore surrounded by an annulus and covered by an operculum. Outline of pollen grains and of pores subcircular to elliptical. Exine tectate with thin sexine closely appresed to the nexine. Sculpture uniformly rugulate to microverrucate over the whole grain surface including the operculum.|