Results 151 to 160 of about 4,072 (171)

Analysis of a Cretaceous (late Aptian) high-stress ecosystem: The Romualdo Formation of the Araripe Basin, northeastern Brazil

Cretaceous Research, 2019
Abstract The Cretaceous (upper Aptian) Romualdo Formation of the Araripe Basin, northeastern Brazil, is a marine-influenced, predominantly fine-grained siliciclastic unit. In the eastern part of the basin, it corresponds to a depositional sequence composed of two transgressive-regressive cycles.
Franz Theodor Fürsich, Michele Andriolli Custódio, Suzana Aparecida Matos   +2 more
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New records of Mawsoniidae (Actinistia) from the Romualdo Formation, Aptian-Albian of the Araripe Basin in Pernambuco state, Brazil

Journal of South American Earth Sciences, 2022
Abstract This work presents the osteological description and taxonomic position of new mawsoniid fossils from the Early Cretaceous Romualdo Formation (Aptian-Albian) of the Araripe Basin, in Pernmabuco, Brazil. The fossils were collected in the municipalities of Araripina, Exu, Ipubi and a new occurrence is registered in the municipality of Ouricuri.
Rizoaldo Barbosa, Marcia Cristina da Silva, Alcina Magnólia Franca Barreto   +2 more
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Osteohistology and growth pattern of a large pterosaur from the Lower Cretaceous Romualdo Formation of the Araripe Basin, Northeastern Brazil

Cretaceous Research, 2021
Abstract A pteranodontoid pterosaur with anhanguerid affinities (MPSC R 1935) from the Romualdo Formation (Lower Cretaceous, Aptian), is described here and provides one of the few cases where the ontogenetic stage is established by comparison of skeletal fusion and detailed osteohistological analyses. The specimen comes from the Baixa Grande locality
Renan Alfredo Machado Bantim, Rafael César Lima Pedroso de Andrade, Jennyfer Sobreira Ferreira, Antônio Álamo Feitosa Saraiva, Alexander Wilhelm Armin Kellner, Juliana Manso Sayão   +5 more
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A new fossil caridean shrimp (Crustacea: Decapoda) from the Cretaceous (Albian) of the Romualdo Formation, Araripe Basin, northeastern Brazil

Zootaxa, 2013
A new fossil caridean shrimp, Kellnerius jamacaruensis n. gen. n. sp., of the early Cretaceous (Albian) from the Romualdo Formation, Araripe Basin, northeastern Brazil is described and illustrated. The new species is compared to known fossil palaemonids found in Brazil. Kellnerius jamacaruensis n. gen. n. sp.
Santana, William Ricardo Amancio, Pinheiro, Allysson Pontes, Silva, Caroline Mayara Rodrigues da, Saraiva, Antônio Álamo   +3 more
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Controlled excavations in the Romualdo Member of the Santana Formation (Early Cretaceous, Araripe Basin, northeastern Brazil): stratigraphic, palaeoenvironmental and palaeoecological implications

Palaeogeography, Palaeoclimatology, Palaeoecology, 2005
Abstract The Romualdo Member of the Santana Formation (Araripe Basin, northeastern Brazil) is famous for the abundance and the exceptional preservation of the fossils found in its early diagenetic carbonate concretions. However, a vast majority of these Early Cretaceous fossils lack precise geographical and stratigraphic data.
Emmanuel Fara
exaly   +2 more sources

CONTROLLED EXCAVATIONS IN THE ROMUALDO FORMATION LAGERSTATTE (ARARIPE BASIN, BRAZIL) AND PTEROSAUR DIVERSITY: REMARKS BASED ON NEW FINDINGS

PALAIOS, 2011
Because of its fossil abundance and exceptional preservation, the Romualdo Formation of the Santana Group has become a famous lithostratigraphic unit of the Araripe Basin. In the past decades, much research has been conducted on the vertebrates of this unit, especially fish and pterosaurs, based mainly on museum collections.
B. C. VILA NOVA, A. A. F. SARAIVA, J. K. R. MOREIRA, J. M. SAYAO   +3 more
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A new unusual tapejarid (Pterosauria, Pterodactyloidea) from the Early Cretaceous Romualdo Formation, Araripe Basin, Brazil

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2013
ABSTRACTA new unusual tapejarid pterosaur from the Early Cretaceous Romualdo Formation (Araripe Basin, Brazil) is described, based on a skull, lower jaw and some postcranial elements.Caupedactylus ybakagen. et sp. shows the typical high nasoantorbital fenestra of the Thalassodrominae but lacks a palatal ridge, and shares with the Tapejarinae several ...
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New occurrences of fossil Testudines of the Romualdo Formation, Aptian-Albian of the Araripe Basin, Pernambuco, Northeast Brazil

Journal of South American Earth Sciences, 2019
Abstract So far, there are at least 22 species of fossil turtles formally described for Brazil, with the Araripe Basin being the second largest in Mesozoic diversity with five species, losing only to the Bauru Group, with six species. The material presented here refers to three fossil turtles (DGEO-CTG-UFPE 8470, DGEO-CTG-UFPE 8471, DGEO-CTG-UFPE ...
Anny Rafaela de Araújo Carvalho, Gustavo Ribeiro Oliveira, Alcina Magnolia Franca Barreto   +2 more
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U/Pb geochronology of fossil fish dentine from Romualdo Formation, Araripe Basin, northeast of Brazil

Journal of South American Earth Sciences, 2022
Alcina M.F. Barreto, Anelise L. Bertotti, Paul J. Sylvester, Ludmila A.C. do Prado, Rilda C. Araripe, David H. de Oliveira, Maria E.T.R. Tomé, Flávia A.P. Lemos, Luis R.L. do Nascimento, Priscilla A. Pereira, Ali Ihsan Albayrak   +10 more
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New invertebrate sites and marine ingressions in the Romualdo Formation, Aptian-Albian, Araripe sedimentary basin, NE Brazil

Journal of South American Earth Sciences, 2023
Bruno de Araújo Gomes, Ludmila Alves Cadeira do Prado, Alcina Magnólia Franca Barreto   +2 more
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