Where: Ceará, Brazil (7.1° S, 39.8° W: paleocoordinates 8.6° S, 8.1° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Santana Group, Late/Upper Aptian (122.5 - 113.0 Ma)
• 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.
• formation-level stratigraphic resolution
Environment/lithology: marine; lithified, muddy, silty mudstone
•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.
Size class: microfossils
• Other: Palynomorphs
Preservation: soft parts, original sporopollenin
Collection methods: bulk, chemical, hydrochloric, hydroflouric,
Primary reference: 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]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 151002: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 19.09.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
| Phimopollenites | |
|
Phimopollenites "sp." Dettmann 1973 | |
| Angiospermae | |
|
Retimonocolpites "sp. 4" Pierce 1961 | |
|
Tricolpites "spp." Couper 1953
Tricolpites "sp. AR4" Couper 1953
Tricolpites cf. micromunus Burger 1970 | |
|
Arecipites "spp." Nichols et al. 1973 palm | |
| Magnoliopsida | |
|
Rousea "spp." Srivastava 1969
Rousea cf. georgensis Dettmann 1973
Rousea aff. geranioides Srivastava 1977 | |
| Trisectoris | |
|
Trisectoris cf. reticulatus Heimhofer and Hochuli 2010 | |