PBDB Collection

Tuma-1 Well, Lithologic Unit 1, 3030-3060 (Cretaceous to of Nigeria)

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

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

Environment/lithology: lacustrine; lithified, gray, argillaceous, silty shale

• Lithologic unit 1 was found to be composed of light grey shale, clay laminae and shows no effervescence. The environment of deposition of this lithologic unit was deduced to be lacustrine environment.

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 139256: 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" "Forma" ("PO") "lawal" Cyathiditesw sp. "Smoothverrucose" "spore" "Trilete" "Spore" "Dinoflagellate" "cyst"
Monocolpites
-	Monocolpites sp. Monocolpites sp. Van der Hammen 1954
Equisetopsida
Pinidae - Pinidae	Classopollis sp., Classopollis brasiliensis Classopollis sp. Pflug 1953 Classopollis brasiliensis Herngreen 1975
Cupressales - Pinidae	Inaperturopollenites sp. Inaperturopollenites sp. Potonié 1966
Galeacornea clavis
-	Galeacornea clavis Galeacornea clavis Stover 1963 elaterate
Galeacornea causea
-	Galeacornea causea Galeacornea causea Stover 1963 elaterate
Algae
- Botryococcaceae	Botryococcus bruni Botryococcus bruni
Cycadopsida
Gnetales -	Elaterosporites klaszii Elaterosporites klaszii Jardiné 1967 elaterate
Ginkgoopsida
Ephedrales -	Ephedripites multicostatus Ephedripites multicostatus Brenner 1963
Angiospermae
Austrobaileyales - Trimeniaceae	Cretacaeiporites scabratus, Cretacaeiporites polygonalis, Cretacaeiporites mulleri Cretacaeiporites scabratus Herngreen 1974 Cretacaeiporites polygonalis Herngreen 1974 Cretacaeiporites mulleri Herngreen 1973
-	Retimonocolpites sp., Afropollis jardinus Retimonocolpites sp. Pierce 1961 Afropollis jardinus Doyle et al. 1982
Dicotyledoneae
-	Triorites africaensis Triorites africaensis Jardiné and Magloire 1965
Angiospermae
Malpighiales - Euphorbiaceae	Tricolporopollenites sp., Tricolporopollenites "spscl" Tricolporopollenites sp. Thomson and Pflug 1953 spurge Tricolporopollenites "spscl" Thomson and Pflug 1953 spurge
-	Monosulcites sp. Monosulcites sp. Cookson and Couper 1953
Gunnerales -	Tricolpites sp. Tricolpites sp. Couper 1953
Buxales - Didymelaceae	Hexaporotricolpites emelianovi Hexaporotricolpites emelianovi Boltenhagen 1967
Magnoliopsida
-	Tricolporites sp. Tricolporites sp. Cookson 1947
Polypodiopsida
-	Verrucosisporites sp. Verrucosisporites sp. Potonie and Kremp 1954
Dinophyceae
Gonyaulacales -	Batiacasphaera sp. Batiacasphaera sp. Drugg 1970
Peridiniales - Peridiniaceae	"Senegalinium sp." = Deflandrea, Senegalinium bicavatum "Senegalinium sp." = Deflandrea Eisenack 1938 Senegalinium bicavatum Jain and Millepied 1971