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Retitrescolpites irregularis
Taxonomy
Retitrescolpites irregularis 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 32, 7.3 x 103.8, a microspore (pollen grain).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1964 | Retitricolporites irregularis Van der Hammen and Wijmstra |
| 1967 | Retitricolporites irregularis González-Guzmán |
| 2001 | Retitrescolpites irregularis Jaramillo and Dilcher p. 154 figs. Plate 15, Fig. 20 |
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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.
†Retitrescolpites irregularis Jaramillo and Dilcher 2001
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Invalid names: Retitricolporites irregularis Van der Hammen and Wijmstra 1964 [replaced]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. E. González-Guzmán 1967 (Retitricolporites irregularis) | Pollen grain tricolporate, prolate-subprolate; furrow C α 1, C β 2, C 𝝲 1; pore P α 3, P β 2, P 𝝲 2; sculpture type reticulate (diameter of lumina 2-3.5 µ). Muri simplibaculate, but sometimes not fused and, if so, the grain partly baculate. Thickness of exine 3-4 µ; ectexine thicker than endexine. Wall semitectate. Furrows with costae colpi and pores with costae pori. | |
| C. A. Jaramillo and D. L. Dilcher 2001 | Retitricolporate, mid-sized (26-30 µm), circular colpi and pores costate, curvimurate, simplicolumellate. |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Late/Upper Paleocene to the top of the Lutetian or 59.24000 to 41.03000 Ma
Collections (69 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Paleocene | Venezuela (Zulia) | Retitricolporites irregularis (151763 151764) | |
| Early/Lower Eocene | Colombia (Norte de Santander) | Retitricolporites irregularis (136759) | |
| Early/Lower Eocene | Colombia | Retitrescolpites irregularis (28773 29143) | |
| Early/Lower Eocene | Venezuela (Zulia) | Retitricolporites irregularis (151769 151770 151772 151774 151775 151777 151778 151779 151781 151783 151784 151786 151787 151790 151792 151793 151794 151795 151796 151802 151803 151804 151805 151806 151807 151808 151809 151811 151812 151813 151814 151815 151816 151817 151818 151819 151820 151821 151822 151823 151824 151825 151826 151827 151828 151829 151830 151831 151832 151833 151834) | |
| Lutetian | Venezuela | Retitricolporites irregularis (212369) | |
| Middle Eocene | Colombia (Norte de Santander) | Retitricolporites irregularis (136828 136918) | |
| Middle Eocene | Colombia | Retitrescolpites irregularis (28775 28861 28863 28865 29073 29074 29076 29078 29079 29149) |