Where: West Kurdufan, Sudan (11.0° N, 27.7° E: paleocoordinates 10.2° S, 17.8° E)
• coordinate based on nearby landmark
When: Zone III (Apt.-Alb.) pollen zone, Bentiu Formation, Aptian to Aptian (125.0 - 100.5 Ma)
• Reference section. Azx-1, interval 1595–1675 m (samples
•Az 05–Az 08).
•Definition. The top of this zone is indicated by the highest
•occurrence of Verrucosisporites rotundus, Stellatopollis
•densiornatus and the presence of Aequitriradites cf. acusus,
•Retimonocolpites variplicatus, Gnetaceaepollenites diversus,
•Gnetaceaepollenites sp. and Classopollis spp. Afropollis
•jardinus, Appendicisporis aegyptiaca and Steevesipollenites
•sinuosus occur just below the top of this zone.
Environment/lithology: fluvial-lacustrine; lithified sandstone
Size class: microfossils
Preservation: soft parts, original sporopollenin
Collection methods: chemical, hydrochloric, hydroflouric, sieve
Primary reference: A. A. M. Eisawi, A. B. Ibrahim, O. B. A. Rahim and E. Schrank. 2012. Palynozonation of the Cretaceous to Lower Paleogene Strata of the Muglad Basin, Sudan. Palynology 36(2):191-207 [C. Jaramillo/G. Doria/A. Cardenas ]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 145171: authorized by Carlos Jaramillo, entered by Gabriela Doria on 28.05.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Algae | |
Cycadopites | |
Cycadopites carpentieri Singh 1964 | |
Cycadopsida | |
Steevesipollenites sinuosus Azema and Boltenhagen 1974 cycads | |
Concavissimisporites | |
Concavissimisporites punctatus Pocock 1964 | |
Ginkgoopsida | |
Ephedripites spp. Bolkhovitina and Potonié 1958
Ephedripites jansonii Muller 1968 | |
Angiospermae | |
Afropollis jardinus Doyle et al. 1982 | |
Pilosisporites trichopapillosus | |
Pilosisporites trichopapillosus Delcourt and Sprumont 1955 | |
Pteridopsida | |
| |
Polypodiopsida | |
Verrucosisporites rotundus Singh 1964 | |