|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 tricolporate, subspheroidal; furrow C α 3, C β 2, C γ 1; pore P α 2, P β 1, P γ 2; sculpture type psilate. Columellae clearly discernible. Exine very thick (maximum thickness 4.8 μ); ectexine thicker than endexine. Polar area 7.6 μ. Equatorial colpus and conspicuous costae colpi present. Some grains verrucate in equatorial area.|