|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; equatorial constriction. Furrow C α 1, C β 1, C γ 1. Sculpture type micro-reticulate (to micro-foveolate); diameter of lumina less than 0.5 μ. In polar area exine thicker and provided with digitate columellae. Thickness of exine in polar area about 3 μ, in equatorial area about 2 μ; ectexine thicker than endexine. Grain provided with equatorial costae and distinct equatorial constriction. Some grains with pore-like markings.|