Análise isotópica de oxigênio e carbono em microfósseis da Formação Romualdo, cretáceo inferior, bacia do Araripe, Pernambuco, nordeste do Brasil

Araripe, Rilda Verônica Cardoso de; Oliveira, David Holanda de; Tomé, Maria Emília Travassos Rios; Mello, Renata Moura de; Barreto, Alcina Magnólia Franca; Sial, Alcídes N.

doi:10.21715/gb2358-2812.2019332133

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Apart from the terminal Cretaceous extinction, the planktic foraminiferal turnover across the Aptian/Albian boundary interval is the most dramatic event in the Cretaceous evolutionary history of planktic foraminifera, with a change from large-sized and heavily ornamented species in the latest Aptian to small-sized, globigeriniform specimens in the earliest Albian 35 – 38 . In the Araripe Basin, the occurrence of foraminifera associations has previously been recognized, inferring a marine ingression into the Araripe Basin recorded in the Romualdo Formation, but their taxonomy and distribution are not documented in detail 39 , 40 . On the other hand, palynoforaminifers (chitinous linings present in palynological preparations) are usually rare and related to benthic taxa 41 – 44 .…”

Section: Introductionmentioning

confidence: 99%

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil

Melo

Guzmán

Almeida-Lima

et al. 2020

Sci Rep

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A combined biostratigraphic and palaeoecological study of foraminifera, ostracodes and microfacies was carried out on the Aptian in the Sítio Sobradinho section of the Araripe Basin, northeast Brazil. The analysed section represents a deepening-upward sequence with mid-ramp shoal and outer ramp to basin facies associations on a mixed siliciclastic-carbonate marine ramp. The analysed rocks are dominated by Early Cretaceous planktic foraminifera (Hedbergella aptiana, H. praelippa, H. sigali, Blesfucuiana cf. cumulus, Microhedbergella miniglobularis, Gorbachikella cf. kugleri, Pseudoguembelitria blakenosensis, Globigerinelloides clavatus, Globigerinelloides aff. aptiensis, Gubkinella sp. and Loeblichella sp.). Ostracoda fauna is composed mainly of Pattersoncypris crepata and Pattersoncypris micropapillosa. The occurrence of P. crepata associated with the Aptian planktic foraminifera demonstrates the potential of this ostracode species to date this interval. The planktic foraminifera from the upper Aptian (Microhedbergella miniglobularis Zone) of the Araripe Basin show characteristical Tethyan affinities.

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Section: Introductionmentioning

confidence: 99%

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil

Melo

Guzmán

Almeida-Lima

et al. 2020

Sci Rep

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show abstract

“…Do ponto de vista paleontológico, a Formação Romualdo destaca-se mundialmente pela diversidade e excepcional preservação dos fósseis em concreções calcárias, principalmente peixes (Konservat-Lagerstätten, Martill, 1988;Maisey, 1991). Mais recentemente, fósseis de invertebrados marinhos, tais como foraminíferos, moluscos, equinodermas e decápodes, têm chamado atenção por contribuir com o estudo paleoambiental e paleogeográfico do sentido da transgressão marinha no Araripe, assunto ainda controverso (Beurlen, 1963;1966;Arai, 2014;Pereira et al, 2017;Prado et al, 2018a, b;Araripe et al, 2019;Melo et al, 2020).…”

Section: Geologia Da Bacia E Contexto Paleogeográficounclassified

A incomum associação de peixes e caranguejos da Formação Romualdo, Aptiano-Albiano da Bacia sedimentar do Araripe, NE do Brasil

Prado¹,

Lopes²,

Pereira³

et al. 2021

Rev. bras. paleontol.

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The unusual association of fish and crabs from Romualdo Formation, Aptian–Albian of the Araripe sedimentary Basin, NE Brazil. In a study and collection of fossils from the Romualdo Formation in “Araripe pernambucano”, an association of Vinctifer comptoni and Rhacolepis buccalis with eubrachyurans and orithopsids crabs was observed in four calcareous nodules. Associations were discussed based on ecological and taphonomic hypotheses. It is noted from the degree of articulation of the organisms, that either the death or the availability of crab moults in the sediment possibly occurred before the death of the fish. In addition, the fish do not have teething consistent with feeding on crabs. Thus, this association would occur due to fossilization processes and not due to ecological interactions. The study also emphasized systematic and paleogeographic aspects of the groups. Romualdocarcinus salesi is probably related to the “higher” true crabs (Eubrachyura), a hypothesis already raised in previous works, due to the preservation of its dorsal carapace next to a pleon of subquadrangular shape similar to those seen in this group. The occurrence of Exucarcinus gonzagai associated with fish, in concretions in the shales, can raise the question of E. gonzagai and Araripecarcinus ferreirai species as synonyms. The data obtained with the survey of the paleogeographic distribution of fish and crabs in geological formations of correlated age corroborates the hypothesis of the Tethyan marine influence in Araripe. Keywords: ichthyolites, decapods, paleoecology, taphonomy, Santana Group, Cretaceous.

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New invertebrate sites and marine ingressions in the Romualdo Formation, Aptian-Albian, Araripe sedimentary basin, NE Brazil

Gomes

Prado

Barreto³

2023

Journal of South American Earth Sciences

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Análise isotópica de oxigênio e carbono em microfósseis da Formação Romualdo, cretáceo inferior, bacia do Araripe, Pernambuco, nordeste do Brasil

Cited by 4 publications

References 8 publications

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil

A incomum associação de peixes e caranguejos da Formação Romualdo, Aptiano-Albiano da Bacia sedimentar do Araripe, NE do Brasil

New invertebrate sites and marine ingressions in the Romualdo Formation, Aptian-Albian, Araripe sedimentary basin, NE Brazil

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