Well Azx-1, Muglad Basin, Sample Az-21 (Cretaceous to of Sudan)

Where: South Kurdufan, Sudan (11.0° N, 27.7° E)

• Paleocoordinates: 15.0° S, 25.7° E (Wright 2013)

• coordinate based on nearby landmark

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

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 172845: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 27.08.2015

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Ginkgoopsida
 Ephedrales -
Ephedripites spp., Ephedripites jansonii
Ephedripites spp. Bolkhovitina and Potonié 1958
Ephedripites jansonii Muller 1968
Concavissimisporites
  -
Concavissimisporites punctatus
Pteridopsida
  -
Deltoidospora diaphana
Deltoidospora diaphana Wilson and Webster 1946
Microfoveolatosporis
  -
Microfoveolatosporis spp.
Polypodiopsida
  -
Verrucosisporites rotundus
 Polypodiales - Polypodiidae
Contignisporites sp.
Contignisporites sp. Dettmann 1963
 Schizaeales - Polypodiidae
Cicatricosisporites spp., Cicatricosisporites cf. australiensis, Cicatricosisporites mohrioides
Cicatricosisporites spp. Potonie and Gelletich 1933
Cicatricosisporites mohrioides Delcourt and Sprumont 1955
  - Marsileaceae
Crybelosporites cf. pannuceus
  - Blechnaceae
Leptolepidites sp., Leptolepidites psarosus
Leptolepidites sp. Couper 1953
Equisetopsida
 Cupressales - Pinidae
"Spheripollenites scabrauts" = Sphaeripollenites
"Spheripollenites scabrauts" = Sphaeripollenites
 Pinidae - Pinidae
Dicheiropollis etruscus, Classopollis spp., Araucariacites australis
Classopollis spp. Pflug 1953
Monocolpopollenites
  -
Monocolpopollenites sp.
Monocolpopollenites sp. Pflug and Thomson 1953
Angiospermae
  -
Stellatopollis densiornatus
Marchantiopsida
 Sphaerocarpales -
Aequitriradites cf. acusus