PBDB Collection

Well Azx-1, Muglad Basin, Sample Az-29 (Cretaceous to of Sudan)

Where: South Kurdufan, Sudan (11.0° N, 27.7° E: paleocoordinates 8.1° S, 16.3° E)

• coordinate based on nearby landmark

When: Abu Gabra Formation, Neocomian to Neocomian (145.0 - 125.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified sandstone

• The successions in several deep wells in the Muglad Basin consist of thick Lower Cretaceous to Paleogene–Neogene strata of claystones, fluvio-lacustrine sandstones and siltstones (Schull 1988). Based on seismic and log interpretations, twelve formations are distinguished in the Muglad Basin of which thick beds of shales and claystones interbedded with fine sandstones and siltstones constitute the Abu Gabra Formation (Neocomian–Aptian), the main source rock in the Muglad Basin. The reservoir rock is the thick sandstone sequence of the Bentiu Formation (Aptian–Cenomanian).

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 172853: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 27.08.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Monocolpopollenites
-	Monocolpopollenites sp. Monocolpopollenites sp. Pflug and Thomson 1953
Equisetopsida
Pinidae - Pinidae	Araucariacites australis, Classopollis spp. Araucariacites australis Cookson 1947 Classopollis spp. Pflug 1953
Cupressales - Pinidae	Inaperturopollenites spp., "Spheripollenites scabratus" = Sphaeripollenites Inaperturopollenites spp. Potonié 1966 "Spheripollenites scabratus" = Sphaeripollenites
Gnetaceaepollenites
-	Gnetaceaepollenites sp. Gnetaceaepollenites sp. Thiergart 1938
Angiospermae
-	Stellatopollis densiornatus Stellatopollis densiornatus Ward 1986
Polypodiopsida
- Marsileaceae	Crybelosporites cf. pannuceus Crybelosporites cf. pannuceus Srivastava 1977
-	Verrucosisporites rotundus Verrucosisporites rotundus Singh 1964
Schizaeales - Polypodiidae	Cicatricosisporites cf. australiensis, Cicatricosisporites salardii, Microfoveolatosporites spp. Cicatricosisporites cf. australiensis Potonié 1956 Cicatricosisporites salardii Dejax 1985 Microfoveolatosporites spp. Nakoman 1966
Pteridopsida
-	Matonisporites sp., Deltoidospora diaphana Matonisporites sp. Couper 1958 Deltoidospora diaphana Wilson and Webster 1946
Pilosisporites trichopapillosus
-	Pilosisporites trichopapillosus Pilosisporites trichopapillosus Delcourt and Sprumont 1955
Marchantiopsida
Sphaerocarpales -	Aequitriradites cf. acusus Aequitriradites cf. acusus Dettmann 1963
Ginkgoopsida
Ephedrales -	Ephedripites spp., Ephedripites cf. multicostatus, Ephedripites jansonii, Ephedripites strigatus Ephedripites spp. Bolkhovitina and Potonié 1958 Ephedripites cf. multicostatus Brenner 1963 Ephedripites jansonii Muller 1968 Ephedripites strigatus Brenner 1968
Cycadopites
-	Cycadopites sp. Cycadopites sp. Wodehouse 1933
Cycadopsida
Gnetales -	Steevesipollenites sinuosus Steevesipollenites sinuosus Azema and Boltenhagen 1974 cycads
Concavissimisporites
-	Concavissimisporites punctatus Concavissimisporites punctatus Pocock 1964
Dinophyceae
Peridiniales - Peridiniaceae	Holmwoodinium notatum Holmwoodinium notatum Batten 1985