Tuma-1 Well, Lithologic Unit 3, 3575-3600 m (Cretaceous to of Nigeria)

Where: Maiduguri, Nigeria (12.1° N, 13.1° E: paleocoordinates 5.4° S, 5.3° E)

When: Kerrikerri Formation (Bornu Basin Group), Albian to Albian (113.0 - 93.9 Ma)

Environment/lithology: lacustrine; lithified, graded, bioturbated, fine-grained, medium, ferruginous, argillaceous sandstone and lithified, fine-grained, gypsiferous, gray, argillaceous shale

• Lithologic unit III (3510-3620 m) heterolithic sand varying from sand, shale, gypsum to clay. The sandstone has the same textural properties to the massive sandstone body overlying it. The shale is dark grey in colour, fissile and moderately associated with about 30% gypsum content. However, the deepest sediment that probably overly the basement is sandy with minor clay (15%) content. Grain sizes vary from fine to granule, angular to rounded and generally moderately sorted.

Size class: microfossils

Preservation: original sporopollenin

Primary reference: A. O. Ola-Buraimo and O. A. Boboye. 2011. Palynological Investigation of the Albian to Lower Cenomanian Bima Formation, Bornu Basin, Nigeria. World Applied Sciences Journal 12(7):1026-1033 [C. Jaramillo/G. Doria]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 139279: authorized by Carlos Jaramillo, entered by Gabriela Doria on 10.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
"Forma" ("PO") "lawal", Cyathiditesw sp., "Smoothverrucose" "spore", "Trilete" "Spore", "Dinoflagellate" "cyst"
Equisetopsida
 Pinidae - Pinidae
Classopollis sp., Classopollis brasiliensis
Classopollis sp. Pflug 1953
Classopollis brasiliensis Herngreen 1975
 Cupressales - Pinidae
Inaperturopollenites sp.
Angiospermae
  -
Afropollis jardinus, Retimonocolpites sp.
Afropollis jardinus Doyle et al. 1982
Retimonocolpites sp. Pierce 1961
 Malpighiales - Euphorbiaceae
Tricolporopollenites sp., Tricolporopollenites "spscl"
Tricolporopollenites sp. Thomson and Pflug 1953 spurge
Tricolporopollenites "spscl" Thomson and Pflug 1953 spurge
 Austrobaileyales - Trimeniaceae
Cretacaeiporites polygonalis, Cretacaeiporites mulleri, Cretacaeiporites scabratus
Cretacaeiporites mulleri Herngreen 1973
 Buxales - Didymelaceae
Hexaporotricolpites emelianovi
 Gunnerales -
Tricolpites sp.
Tricolpites sp. Couper 1953
  -
Monosulcites sp.
Monosulcites sp. Cookson and Couper 1953
Dicotyledoneae
  -
Triorites africaensis
Triorites africaensis Jardiné and Magloire 1965
Magnoliopsida
  -
Tricolporites sp.
Tricolporites sp. Cookson 1947
Monocolpites
  -
Monocolpites sp.
Monocolpites sp. Van der Hammen 1954
Galeacornea causea
  -
Galeacornea causea
Galeacornea causea Stover 1963 elaterate
Galeacornea clavis
  -
Galeacornea clavis
Galeacornea clavis Stover 1963 elaterate
Algae
  - Botryococcaceae
Botryococcus bruni
Polypodiopsida
  -
Verrucosisporites sp.
Verrucosisporites sp. Potonie and Kremp 1954
Cycadopsida
 Gnetales -
Elaterosporites klaszii
Elaterosporites klaszii Jardiné 1967 elaterate
Ginkgoopsida
 Ephedrales -
Ephedripites multicostatus
Dinophyceae
 Peridiniales - Peridiniaceae
"Senegalinium sp." = Deflandrea, Senegalinium bicavatum
"Senegalinium sp." = Deflandrea Eisenack 1938
Senegalinium bicavatum Jain and Millepied 1971
 Gonyaulacales -
Batiacasphaera sp.
Batiacasphaera sp. Drugg 1970