Where: South 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, depth 1580 m (sample Az
•04).
•Definition. The top of this zone is marked by the last
•occurrence of Crybelosporites cf. pannuceus and the
•occurrence of abundant Classopollis spp., Ephedripites
•jansonii, Ephedripites cf. multicostatus and Araucariacites
•australis.
•Suggested age. Albian–Cenomanian.
•Discussion. The African range of Crybelosporites pannuceus
•is restricted to the Albian and Cenomanian (Lawal
•and Moullade 1986; Awad 1994; Schrank and Ibrahim
•1995; Schrank and Mahmoud 1998) and from the same
•interval in northern South America (e.g. Brenner 1968;
•Regali et al. 1974). The occurrence of Ephedripites
•jansonii within the Albian/Cenomanian interval is
•evident, e.g. in Sudan (Awad 1994; Eisawi et al. 2009),
•in Brazil (Traverse 1988) and in Nigeria (Lawal and
•Moullade 1986). Classopollis spp. and Araucariacites
•australis are common in this interval
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 145160: authorized by Carlos Jaramillo, entered by Gabriela Doria on 28.05.2013, edited by Patricio Santamarina
Creative Commons license: CC BY (attribution)
Taxonomic list
Monocolpopollenites | |
Monocolpopollenites sp. Pflug and Thomson 1953 | |
Equisetopsida | |
Classopollis spp. Pflug 1953 | |
"Spheripollenites scabratus" = Sphaeripollenites
"Spheripollenites scabratus" = Sphaeripollenites | |
Balmeiopsis limbatus Balme 1957
Araucariacites australis Cookson 1947 | |
Angiospermae | |
Stellatopollis densiornatus Ward 1986 | |
Gnetaceaepollenites | |
Gnetaceaepollenites fissuratus de Lima 1980 | |
Pilosisporites trichopapillosus | |
Pilosisporites trichopapillosus Delcourt and Sprumont 1955 | |
Microfoveolatosporis | |
Microfoveolatosporis spp. Krutzsch 1959 | |
Polypodiopsida | |
Crybelosporites cf. pannuceus Srivastava 1977 | |
Leptolepidites sp. Couper 1953
Leptolepidites psarosus Norris 1969 | |
Gleicheniidites senonicus Ross 1949 | |
Cicatricosisporites spp. Potonie and Gelletich 1933
Cicatricosisporites salardii Dejax 1985 | |
Ginkgoopsida | |
Ephedripites spp. Bolkhovitina and Potonié 1958
Ephedripites jansonii Muller 1968 |