|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.
|A. E. González-Guzmán 1967||Pollen grain tricolpate, prolate; furrow C α 2, C β 3, C γ 2; sculpture type verrucate, and sometimes locally psilate. Furrows provided with a margo. Exine usually thicker in the equatorial area. Sometimes the furrows seem to be interrupted (if so, grain resembling a tricolporate grain). Maximum thickness of exine 3μ; ectexine thicker than endexine. Exine very irregular. Grain tektite. Polar area rather small.|