Results 11 to 20 of about 4,825,269 (154)

An Unusual Fossiliferous Site in the Romualdo Formation in the Socorro Basin (Northeast Brazil) [PDF]

Anuário do Instituto de Geociências, 2023
The Santana Group, from the base to the top, comprises the Barbalha, Crato, Ipubi, and Romualdo formations. Calcareous concretions from the Romualdo Formation are found in the Araripe Basin, but the geographic extension of this sequence has evidence in ...
Oliveira, Juliana Trindade Marques de, Filho, Edilson Bezerra dos Santos, Barros, Olga Alcântara, Bantim, Renan Alfredo Machado, Saraiva, Antônio Álamo Feitosa, Lima, Flaviana Jorge de, Alves, Ana Maria de Souza   +6 more
core   +2 more sources

New findings on Dendrobranchiata fossils of the Romualdo Formation, Araripe Basin, Northeast of Brazil

Zootaxa, 2020
FIGURE 2. Lateral view of the specimen Paleomattea delicosa (LPU 1303 A) (A) from the Romualdo Formation. (B) Line drawing of the specimen (by J.E). Scale 5mm.Published as part of Alencar, Damares Ribeiro, Oliveira, Gustavo Ribeiro De, Pinheiro, Allysson
Alencar, Damares Ribeiro, Oliveira, Gustavo Ribeiro De, Pinheiro, Allysson Pontes, Saraiva, Antônio Álamo Feitosa   +3 more
core   +4 more sources

Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil) [PDF]

Brazilian Journal of Geology, 2018
: The Romualdo Formation, Araripe Basin, crops out in the municipality of Exu, Pernambuco State, exposing coquinas. Fauna survey, taphonomic analysis of the macrobenthos, and identification of sedimentary facies of the outcrop were carried out to ...
Ludmila Alves Cadeira do Prado, Alcina Magnólia Franca Barreto, Gelson Luís Fambrini   +2 more
core   +5 more sources

An unusual pterosaur specimen (Pterodactyloidea, ?azhdarchoidea) from the early cretaceous Romualdo formation of Brazil, and the evolution of the pterodactyloid palate. [PDF]

PLoS One, 2012
A new and unusual specimen of a probable azhdarchoid pterosaur is described for the Early Cretaceous (Albian) Romualdo Formation of Brazil. The specimen consists of a palate that, although fragmentary, has a unique morphology differing from all other ...
Pinheiro FL, Schultz CL.
europepmc   +8 more sources

FIGURE 1 in A new toothed pterosaur (Pterodactyloidea: Anhangueridae) from the Early Cretaceous Romualdo Formation, NE Brazil

Zootaxa, 2014
FIGURE 2. The holotype of Maaradactylus kellneri gen. et sp. nov. (MPSC R 2357) from the Romualdo Formation, Araripe basin, Brazil. a, before preparation. b, after preparation. Scale bar=100mm.Published as part of Bantim, Renan A. M., Saraiva, Antônio A.
Sayão, Juliana M., Bantim, Renan A. M., Saraiva, Antônio A. F., Oliveira, Gustavo R.   +3 more
core   +4 more sources

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil. [PDF]

Sci Rep, 2020
Abstract 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 ...
Melo RM, Guzmán J, Almeida-Lima D, Piovesan EK, Neumann VHML, Sousa AJE.   +5 more
europepmc   +4 more sources

The Invertebrates of The Romualdo Formation, Araripe Basin: Analysis of Paleoecological and Paleogeographical Data [PDF]

Anuário do Instituto de Geociências
Fossil invertebrates are good paleoenvironmental indicators due to their sensitivity to abiotic conditions, which contributes to the understanding of the Aptian-Albian of the Araripe Basin.
Gomes, Bruno de Araújo, Franca Barreto, Alcina Magnólia, Cadeira do Prado, Ludmila Alves   +2 more
core   +3 more sources

The first theropod dinosaur (Coelurosauria, Theropoda) from the base of the Romualdo Formation (Albian), Araripe Basin, Northeast Brazil. [PDF]

Sci Rep, 2020
AbstractThe Romualdo Formation (Araripe Basin) is worldwide known for the large number of well-preserved fossils but the dinosaur record is rather scarce. Here we describe a new coelurosaur, which is the first tetrapod recovered from the basal layers of this stratigraphic unit that consist of dark shales. Aratasaurus museunacionali gen. et sp. nov.
Sayão JM, Saraiva AÁF, Brum AS, Bantim RAM, de Andrade RCLP, Cheng X, de Lima FJ, de Paula Silva H, Kellner AWA.   +8 more
europepmc   +4 more sources

Stratigraphic profile and scheme of the Romualdo Formation.

, 2023
Stratigraphic profile and scheme of the Romualdo Formation (Cretaceous—Aptian/Albian) where the specimens were collected. Vertical exposure = 32 m.
Antônio Álamo Feitosa Saraiva (14828438), William Santana (1517410), Gustavo Ribeiro de Oliveira (14828441), Allysson Pontes Pinheiro (12656909), Damares Ribeiro Alencar (14828435), Daniel Lima (4903654)   +5 more
core   +1 more source

Physicochemical investigation of shrimp fossils from the Romualdo and Ipubi formations (Araripe Basin)

PeerJ, 2019
The Ipubi and Romualdo Formations are Cretaceous units of the Araripe Basin (Santana Group). The first and most ancient was deposited in a lake environment, and some fossils were preserved in shales deposited under blackish conditions. The second was deposited in a marine environment, preserving a rich paleontological content in calcareous concretions.
Barros, Olga Alcântara, Silva, João Hermínio, Saraiva, Gilberto Dantas, Viana, Bartolomeu Cruz, Paschoal, Alexandre Rocha, Freire, Paulo Tarso Cavalcante, Oliveira, Naiara Cipriano, Paula, Amauri Jardim, Viana, Maria Somália   +8 more
openaire   +3 more sources