|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 I, C β 2, C γ I; sculpture type gemmate; diameter and height of gemmae slightly less than 1 μ. Thickness of exine about 1 μ (including sculpture), 'extexine' thicker than endexine. Polar area 5 μ. Grain apparently intestate.|