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Retistephanoporites crassiexinatus

Taxonomy
Retistephanoporites crassiexinatus was named by Jaramillo and Dilcher (2001) [Type locality: Piñalerita Creek near Sabanalarga. ]. It is not extant. It is considered to be a form taxon. Its type specimen is UFP 37, 5.2 x 85.6, a microspore (pollen grain). Its type locality is Pinalerita UFP 37, Llanos foothills, Colombia, which is in an Eocene fluvial-deltaic sandstone/siliciclastic in the Areniscas de el Limbo Formation of Colombia.

Sister species lacking formal opinion data
R. minutiporous

Synonymy list
YearName and author
2001Retistephanoporites crassiexinatus Jaramillo and Dilcher p. 151 figs. Plate 16, Figs. 28-29

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RankNameAuthor
kingdomPlantae
phylumTracheophyta(Sinnott 1935)
—Pteridobiotina
superphylumCycadophytanae
RankNameAuthor
phylumMagnoliophytaCronquist et al.
genusRetistephanoporites
speciescrassiexinatus

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.

†Retistephanoporites crassiexinatus Jaramillo and Dilcher 2001
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Diagnosis
ReferenceDiagnosis
C. A. Jaramillo and D. L. Dilcher 2001Retistephanoporate, hexagonal, mid-sized (37 µm), exine semitectate thick (3.0 µm), nexine thick.
Measurements
No measurements are available
No ecological data are available

Age range: Middle Eocene or 47.80000 to 37.71000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Middle Eocene47.8 - 37.71Colombia Retistephanoporites crassiexinatus (type locality: 28861)