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 145172: authorized by Carlos Jaramillo, entered by Gabriela Doria on 28.05.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Polypodiopsida | |
Gleicheniidites senonicus Ross 1949 | |
Cicatricosisporites spp. Potonie and Gelletich 1933
Cicatricosisporites mohrioides Delcourt and Sprumont 1955 | |
Contignisporites sp. Dettmann 1963 | |
Crybelosporites cf. pannuceus Srivastava 1977 | |
Leptolepidites spp. Couper 1953 | |
Pilosisporites trichopapillosus | |
Pilosisporites trichopapillosus Delcourt and Sprumont 1955 | |
Angiospermae | |
Afropollis zonatus Doyle et al. 1982
Afropollis jardinus Doyle et al. 1982
Afropollis cf. operculatus Doyle et al. 1982
Retimonocolpites variplicatus Schrank and Mahmoud 1998 | |
Concavissimisporites | |
Concavissimisporites punctatus Pocock 1964 | |
Ginkgoopsida | |
Ephedripites strigatus Brenner 1968
Ephedripites jansonii Muller 1968
Ephedripites cf. multicostatus Brenner 1963 | |
Cycadopites | |
Cycadopites sp. Wodehouse 1933 | |
Cycadopsida | |
Steevesipollenites sinuosus Azema and Boltenhagen 1974 cycads | |
Monocolpopollenites | |
Monocolpopollenites sp. Pflug and Thomson 1953 | |
Equisetopsida | |
Araucariacites hungaricus Deak 1964
Araucariacites australis Cookson 1947
Classopollis spp. Pflug 1953 | |
Algae | |
Rouseisporites | |
Rouseisporites sp. Pocock 1962 | |
Marchantiopsida | |
Aequitriradites cf. acusus Dettmann 1963 | |
Lycopodiopsida | |
Camarozonosporites sp. Potonié 1956 clubmoss | |
Gnetaceaepollenites | |
Gnetaceaepollenites diversus Stover 1964 | |
Gemmatriletes | |
Gemmatriletes sp. Pierce 1961 |