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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Gemmastephanoporites polymorphus
Taxonomy
Gemmastephanoporites polymorphus was named by González-Guzmán (1967). It is considered to be a form taxon. Its type specimen is Slide F-III-57-598 (Catatumbo). Loc: 44X114.7 (micr. P0-58), a seed repro (Pollen grain), and it is a 3D fossil preserving soft parts.
Synonymy list
Year | Name and author |
---|---|
1967 | Gemmastephanoporites polymorphus González-Guzmán p. 60 figs. Plate XIX Figs. 5-5d |
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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.
†Gemmastephanoporites polymorphus González-Guzmán 1967
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Diagnosis
Reference | Diagnosis | |
---|---|---|
A. E. González-Guzmán 1967 | Pollen grain stephanoporate, equatorial limb approximately circular; pore P α 1b-3b, P β 1, P γ 2; sculpture gemmate (diameter of the elements about 2.7 μ). Columellae ('granulae') distinct and arranged in a micro-reticulate pattern (diameter of lumina < 0.5 μ). Thickness of exine 2 μ; ectexine thicker than endexine. Muri simplibaculate and grain probably semitectate. |
Measurements
part | N | mean | |||||
---|---|---|---|---|---|---|---|
Pollen grain diameter | 1 | 0.045 |
No ecological data are available
Age range: base of the Early/Lower Eocene to the top of the Lutetian or 55.80000 to 41.30000 Ma
Collections (4 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Early/Lower Eocene | Colombia (Norte de Santander) | Gemmastephanoporites polymorphus (136759) | |
Lutetian | Venezuela | Gemmastephanoporites polymorphus (212369) | |
Middle Eocene | Colombia (Norte de Santander) | Gemmastephanoporites polymorphus (136828 136918) |