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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.
|T. Van der Hammen and C. Garcia de Mutis 1966||The holotype (Slide F-I-34, Col. S.G.N., Suesca, Maestrichtian, Zone A) is tricolpate and finely reticulate. The thickness of the exine is clearly visible in optical section (± 1 μ). The polar area is small. The size of the grain is ± 23 μ. The specimens from the Paleocene are identical with this species described from the Maestrichtian.|