| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Siltaria media
Taxonomy
Siltaria media was named by Jaramillo and Dilcher (2001) [Other specimen: UFP 38, 19 x 91.5.
n. comb.
]. It is not extant. It is considered to be a form taxon. Its type specimen is UFP 32, 7.5 x 109.3, a microspore (Pollen grain).
Sister species lacking formal opinion data
Entered
by C. Jaramillo on 2015-10-13
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1967 | Retitricolporites medius González-Guzmán p. 40 figs. Plate X Figs. 3-3e |
| 2001 | Siltaria media Jaramillo and Dilcher p. 161 figs. Plate 19, Fig. 12 |
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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.
†Siltaria media Jaramillo and Dilcher 2001
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Invalid names: Retitricolporites medius González-Guzmán 1967 [replaced]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. E. González-Guzmán 1967 (Retitricolporites medius) | Pollen grain tricolporate, prolate-subprolate; furrow C α 2, C β 3, C 𝝲 1; pore P α 3, P β 3, P 𝝲 1; sculpture type reticulate; wall semitectate. Columellae clearly visible. Thickness of exine about 1.2 µ; ectexine thicker than endexine. Polar are rather small. | |
| C. A. Jaramillo and D. L. Dilcher 2001 | Tricolporate, small to mid-sized (19-30 µm), subprolate, exine 1-1.5 µm, columellae distinct, ectocolpi intruding, pore simple, micropitted 0.5 µm wide. |
Measurements
No measurements are available
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| Source: superp = superphylum | |||||
| Reference: Kenrick and Crane 1997 | |||||
Age range: base of the Early/Lower Eocene to the top of the Middle Eocene or 56.00000 to 37.71000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Eocene | Colombia | Siltaria media (28773 28774) | |
| Early/Lower Eocene | Colombia (Norte de Santander) | Retitricolporites medius (136756 136759) | |
| Middle Eocene | Colombia (Norte de Santander) | Retitricolporites medius (136828 136918) | |
| Middle Eocene | Colombia | Siltaria media (29079) |