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Retitricolpites constrictus

Taxonomy
Retitricolpites constrictus was named by González-Guzmán (1967). It is considered to be a form taxon. Its type specimen is Slide F-III-96-579 (Catatumbo). Loc: 109.5X35.1 (micr. P0-58), a seed repro (Pollen grain), and it is a 3D fossil preserving soft parts.

Synonymy list
YearName and author
1967Retitricolpites constrictus González-Guzmán p. 33 figs. Plate IV Figs. 3-3b

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RankNameAuthor
kingdomPlantae
superphylumTracheophyta
Pteridobiotina
superphylumCycadophytanae
RankNameAuthor
phylumMagnoliophytaCronquist et al.
genusRetitricolpitesVan der Hammen 1956
speciesconstrictus

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.

Diagnosis
ReferenceDiagnosis
A. E. González-Guzmán 1967Pollen 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.