Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Retitricolpites absolutus

Taxonomy
Retitricolpites absolutus was named by Jaramillo and Dilcher (2001). It is considered to be a form taxon. Its type specimen is UFP 44, 4.8 x 104.4, a microspore (Pollen grain), and it is a compression fossil. Its type locality is Pinalerita UFP 44, Llanos foothills, Colombia, which is in an Eocene fluvial-deltaic claystone/mudstone in the San Fernando Formation of Colombia.

It was recombined as Poloretitricolpites absolutus by Jaramillo and Dilcher (2001).

Synonymy list
YearName and author
1967Retitricolpites absolutus González-Guzmán p. 31 figs. Plate 1 figs. 8 - 8f
2001Poloretitricolpites absolutus Jaramillo and Dilcher
2001Retitricolpites absolutus Jaramillo and Dilcher p. 140 figs. Plate 14, Figs. 2-3

Is something missing? Join the Paleobiology Database and enter the data

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

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, spheroidal; furrow C α 2, C β 2, C γ 1. Sculpture type reticulate (diameter of lumina 1 μ). Polar area rather large. Grain provided with costar colpi. Thickness of exine about 1.5 μ. (incl. reticulum). Equatorial zone tectate and psilate-foveolate, but polar zones per-reticulate. Muri with perfoate tectum. Reticulum diminishes towards equatorial zone, where sculpture becomes foveate-psilate. Ectexine thicker than endexine.
C. A. Jaramillo and D. L. Dilcher 2001Tricolpate, mid sized (27 µm), subprolate, exine thick, tectate, colpi short, costate, psilate at equator, foveolate-reticulate at poles.