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Retitrescolpites magnus

Taxonomy
Retitrescolpites magnus was named by Jaramillo and Dilcher (2001) [n. comb.]. It is not extant. It is considered to be a form taxon. Its type specimen is UFP 38, 19.4 x 88.8, a microspore (pollen grain). Its type locality is Pinalerita UFP 34, Llanos foothills, COlombia, which is in an Eocene fluvial-deltaic siliciclastic in the Areniscas de el Limbo Formation of Colombia.

Synonyms
Synonymy list
YearName and author
1967Retitricolpites magnus González-Guzmán p. 34 figs. Plate V Figs. 2-2c
2001Retitrescolpites magnus Jaramillo and Dilcher p. 154 figs. Plate 17, Figs. 15-16

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RankNameAuthor
kingdomPlantae
superphylumTracheophyta
Pteridobiotina
superphylumCycadophytanae
RankNameAuthor
phylumMagnoliophytaCronquist et al.
genusRetitrescolpitesSah 1967
speciesmagnus

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 1967 (Retitricolpites magnus)Pollen grain tricolpate, prolate; furrow C α 1, C β 2, C γ 1; sculpture type reticulate with 'heterobrochate' reticulation; muri simplibaculate. Diameter of lumina 3-6 μ. Wall semitectate. Thickness of exine about 4.5 μ; ectexine thicker than endexine. Equatorial constriction. Polar area rather small.
C. A. Jaramillo and D. L. Dilcher 2001Retitricolpate, mid-sized (38-55 µm), colpi simple, long, lumina 3-4 µm wide, uniform, dense, muri thin, simplicolumellate.