Estiva section / EST-53: Late/Upper Aptian, Brazil
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
|
|||||||
Phimopollenites informal sp.
Dettmann 1973
|
|||||||
Magnoliopsida
|
|||||||
Rousea cf. delicata
|
|||||||
Rousea informal spp.
|
|||||||
Rousea aff. geranioides
Srivastava 1977
|
|||||||
Rousea cf. georgensis
Dettmann 1973
|
|||||||
Angiospermae
- Gunnerales
|
|||||||
Tricolpites informal spp.
|
|||||||
Tricolpites informal sp. AR4
Couper 1953
|
|||||||
Tricolpites cf. micromunus
Burger 1970
|
|||||||
Angiospermae
- Arecaceae
|
|||||||
Arecipites informal spp.
|
|||||||
Angiospermae
|
|||||||
Retimonocolpites informal sp. 4
Pierce 1961
|
|||||||
unclassified
|
|||||||
Trisectoris cf. reticulatus
Heimhofer and Hochuli 2010
|
|||||||
see common names |
Geography
Country: | Brazil | State/province: | CearĂ¡ |
Coordinates: | 7.1° South, 39.8° West (view map) | ||
Paleocoordinates: | 8.6° South, 8.1° West | ||
Basis of coordinate: | stated in text | ||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
Stage: | Aptian | 10 m.y. bin: | Cretaceous 3 |
Key time interval: | Late/Upper Aptian | ||
Age range of interval: | 122.46000 - 112.03000 m.y. ago |
Stratigraphy
Geological group: | Santana | ||||
Stratigraphic resolution: | formation | ||||
Stratigraphy comments: From Melo et al. 2020: In summary, this integrated study of foraminifera, ostracodes and other microfossil data from the Romualdo Formation indicates that the local Alagoas Stage (Ostracoda Zone RT-011) can now be constrained to the Aptian. Arai and Assine 2020 also support that the Romualdo Formation and Santana Group is entirely Aptian in age. |
Lithology and environment
Primary lithology: | lithified muddy,silty mudstone |
Lithology description: The organic-rich shales are gradually replaced by grey-green silt-rich mudstones containing an impoverished benthic fauna including ostracods, gastropods and bivalves. In the uppermost part of this unit, one to several limestone beds with abundant storm reworked gastropods (Paraglauconia layer) can be traced across the entire basin and used as a bio- and lithostratigraphic correlation horizon. | |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body,soft parts,original sporopollenin |
Size of fossils: | microfossils |
Collection methods and comments
Collection methods: | bulk,chemical,hydrochloric,hydroflouric,field collection |
Reason for describing collection: | general faunal/floral analysis |
Metadata
Database number: | 151002 | ||
Authorizer: | C. Jaramillo | Enterer: | P. Santamarina |
Modifier: | M. Carrano | Research group: | micropaleontology |
Created: | 2013-09-19 06:42:28 | Last modified: | 2023-03-13 15:51:25 |
Access level: | authorizer only | Released: | 2018-09-19 06:42:28 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
48227. | U. Heimhofer and P.-A. Hochuli. 2010. Early Cretaceous angiosperm pollen from a low latitude succession (Araripe Basin, NE Brazil). Review of Palaeobotany and Palynology 161:105-126 [C. Jaramillo/P. Santamarina/P. Santamarina] |