| Texto completo | |
| Autor(es): |
Rodrigues, M. G.
;
Matos, S. A.
;
Varejao, F. G.
;
Fuersich, F. T.
;
Warren, L. V.
;
Assine, M. L.
;
Simoes, M. G.
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CRETACEOUS RESEARCH; v. 115, p. 20-pg., 2020-11-01. |
| Resumo | |
New Aptian (Lower Cretaceous) bakevelliid bivalves are described for the Romualdo Formation, Santana Group, Araripe Basin, northeastern Brazil. Together with the other known member of the family Bakevelliidae, already recorded from the unit (i.e., Aguileria dissita), the new bivalves (Araripevellia musculosa gen. et sp. nov., Aguileria romualdoensis sp. nov., and Gen. et sp. indet.) indicate that the Romualdo bakevelliid fauna was more diverse than previously realized. Bakevelliid-rich carbonates, some with specimens preserved in situ, are restricted to the upper third of this unit, a stratigraphic interval yielding also echinoderm-, gastropod- and stromatolite-bearing limestones. These pteriomorphian bivalves were widely distributed in the Romualdo Formation and are a testimony of the short-lived Bakevelliid-Sea that flooded the whole Araripe Basin during the Aptian. Notably, Aguileria romualdoensis sp. nov. closely resembles Aguileria renauxiana from the Cenomanian Woodbine Formation, Texas, US. In addition, Aguileria dissita is also recorded in the upper Aptian Albian Riachuelo Formation of the Sergipe-Alagoas Basin. Together with other macroinvertebrates (i.e., gastropods, echinoderms, bivalves) the bakevelliid fauna of the Romualdo Formation can be tightly correlated with that of the Riachuelo Formation, supporting a paleogeographic scenario with a marine ingression flooding the Araripe Basin from the southeast, probably via the seaway developed in the Reconcavo-Tucano basin area. Finally, sedimentologic, stratigraphic and paleontological data indicates that the fate of the bakevelliids in the Romualdo Formation was linked to the onset of continentalization of the Araripe Basin. (C) 2020 Elsevier Ltd. All rights reserved. (AU) | |
| Processo FAPESP: | 18/01750-7 - Bivalves Bakevelliidae da Formação Romualdo (andar Alagoas, Cretáceo Inferior), Bacia do Araripe, Brasil: significado paleoambiental e paleogeográfico |
| Beneficiário: | Mariza Gomes Rodrigues |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 17/20803-1 - Contexto Estratigráfico e Paleoambiental das Assembleias de Macroinvertebrados da Formação Romualdo, Cretáceo da Bacia do Araripe, e suas Implicações Paleogeográficas |
| Beneficiário: | Suzana Aparecida Matos da Silva |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 16/13214-7 - Abordagem multi-indicadores do sistema misto carbonático-siliciclástico da Formação Crato: evolução sedimentar, paleogeografia e tectônica |
| Beneficiário: | Filipe Giovanini Varejão |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 14/00519-9 - Centralidades do Lazer Noturno na Cidade de São Carlos - SP e as Relações de interface |
| Beneficiário: | Tiago Ferreira Lopes Machado |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |