L91*, Benue Trough: Late/Upper Cenomanian, Nigeria

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Ephedroid indet.
Abundant rank
Galeacomea clavis
Abundant rank
Equisetopsida - Araucariaceae
Araucariacites australis Cookson 1947
Rare rank
Equisetopsida - Cheirolepidiaceae
Classopollis brasiliensis Herngreen 1975
Abundant rank
unclassified
Gnetaceaepollenites informal sp. 1 Thiergart 1938
Abundant rank
Gnetaceaepollenites diversus Stover 1964
Abundant rank
Galeacornea causea Stover 1963
Rare rank
Cycadopsida - Cycadales
Eucommiidites sp. Erdtman 1948
Rare rank
Angiospermae
Triorites africaensis Jardiné and Magloire 1965
Abundant rank
Angiospermae - Austrobaileyales - Trimeniaceae
Cretacaeiporites scabratus Herngreen 1974
Abundant rank
Angiospermae
Afropollis sp. Doyle et al. 1982
Abundant rank
unclassified
Perotriletes pannuceus Brenner 1963
Rare rank
see common names

Geography
Country:Nigeria State/province:Nikalagu
Coordinates: 8.0° North, 11.0° East (view map)
Paleocoordinates:8.2° South, 2.7° East
Basis of coordinate:estimated from map
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Cenomanian 10 m.y. bin:Cretaceous 5
Key time interval:Late/Upper Cenomanian
Age range of interval:99.60000 - 93.50000 m.y. ago
Stratigraphy
Geological group:Asu River Formation:Eze-Aku
Local section:Ezillo Local bed:12-13.5 m
Local order:top to bottom
Lithology and environment
Primary lithology:planar lamination,nodular,pyritic,black lithified argillaceous "shale"
Lithology description: Black flaggy laminated shale with small pyrite nodules
Environment:marine indet.
Taphonomy
Modes of preservation:soft parts,original sporopollenin
Size of fossils:microfossils
Collection methods and comments
Collection excludes:all microfossils
Collection methods:chemical,hydrochloric,hydroflouric,sieve
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:144570
Authorizer:C. Jaramillo Enterer:G. Doria
Modifier:M. Uhen
Created:2013-05-11 03:19:27 Last modified:2018-11-16 10:42:11
Access level:the public Released:2013-05-11 03:19:27
Creative Commons license:CC BY
Reference information

Primary reference:

46632. O. Lawal. 1991. Palynological age and correlation of a black shale section in the Eze-Aku Formation, Lower benue Trough, Nigeria. Journal African Earth Sciences 12(3):473-482 [C. Jaramillo/G. Doria]