L91*, Benue Trough: Late/Upper Cenomanian, Nigeria
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Ephedroid indet.
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Abundant rank | ||||||
Galeacomea clavis
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Abundant rank | ||||||
Equisetopsida
- Araucariaceae
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Araucariacites australis
Cookson 1947
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Rare rank | ||||||
Equisetopsida
- Cheirolepidiaceae
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Classopollis brasiliensis
Herngreen 1975
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Abundant rank | ||||||
unclassified
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Gnetaceaepollenites informal sp. 1
Thiergart 1938
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Abundant rank | ||||||
Gnetaceaepollenites diversus
Stover 1964
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Abundant rank | ||||||
Galeacornea causea
Stover 1963
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Rare rank | ||||||
Cycadopsida
- Cycadales
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Eucommiidites sp.
Erdtman 1948
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Rare rank | ||||||
Angiospermae
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Triorites africaensis
Jardiné and Magloire 1965
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Abundant rank | ||||||
Angiospermae
- Austrobaileyales
- Trimeniaceae
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Cretacaeiporites scabratus
Herngreen 1974
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Abundant rank | ||||||
Angiospermae
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Afropollis sp.
Doyle et al. 1982
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Abundant rank | ||||||
unclassified
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Perotriletes pannuceus
Brenner 1963
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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
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] |