Results 11 to 20 of about 277 (161)

Cretaceous Pterosaurs of the Araripe Basin: A Comprehensive Taxonomic Update and Paleobiological Insights [PDF]

Anais da Academia Brasileira de Ciências
More than fifty years after the first discoveries of pterosaurs in the Araripe Basin, this sedimentary unit remains one of the most informative windows into the diversity and biology of these fantastic flying reptiles.
FELIPE L. PINHEIRO, ALEXANDER W.A. KELLNER, JOÃO L. DA SILVA, RUDAH R.C. DUQUE, JULIANA M. SAYÃO, ESAÚ V. DE ARAÚJO, FABIANA R. COSTA, RICHARD BUCHMANN, GABRIELA M. CERQUEIRA, LUCAS CANEJO, VICTOR BECCARI, RENAN A.M. BANTIM, BORJA HOLGADO, RUBI V. PÊGAS   +13 more
doaj   +3 more sources

Extending the Geographic Range of Pterosaurs in the Araripe Basin: First Record from the Romualdo Formation (Araripe Basin) in Piauí, Brazil [PDF]

Anais da Academia Brasileira de Ciências
The Araripe Basin in northeastern Brazil is a key site for Cretaceous pterosaur fossils from Gondwanan deposits. Most discoveries are concentrated in its northern portion, particularly in Ceará state, within the Crato and Romualdo formations. In contrast,
RENAN A.M. BANTIM, ESAÚ V. DE ARAÚJO, ARTUR F.S. ARAÚJO, FLAVIANA J. DE LIMA, JULIANA M. SAYÃO, PAULO V. DE OLIVEIRA   +5 more
doaj   +3 more sources

Petrography of Evaporite Facies from the Ipubi Member, Santana Formation (Araripe Basin) [PDF]

Anuário do Instituto de Geociências, 2018
The Ipubi member of the Santana Formation (Araripe Basin) is a sulfated evaporite succession composed of gypsum and anhydrite of Aptian age, thus, it is chronocorrelated to the Brazilian Margin Salt Phase, when thick layers of salts accumulated.
Guilherme Duarte, Leonardo Borghi
doaj   +3 more sources

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

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

Caracterização espectroscópica de peixe do período cretáceo (Bacia do Araripe) Spectroscopic characterization of a fish of the cretaceous period (Araripe Basin)

Química Nova, 2007
The study of fossils has made considerable progress over the last years as a result of the use of new experimental techniques. This paper describes the chemical composition of a fossilized fish of the Cretaceous period, from a 100 million-year-old ...
Ricardo Jorge Cruz Lima, Antonio Alamo Feitosa Saraiva, Silvania Lanfredi, Marcos Augusto de Lima Nobre, Paulo de Tarso Cavalcante Freire, José Marcos Sasaki   +5 more
doaj   +2 more sources

Physicochemical investigation of shrimp fossils from the Romualdo and Ipubi formations (Araripe Basin). [PDF]

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 OA, Silva JH, Saraiva GD, Viana BC, Paschoal AR, Freire PTC, Oliveira NC, Paula AJ, Viana MS.   +8 more
europepmc   +4 more sources

Growth ring analysis of fossil coniferous woods from early cretaceous of Araripe Basin (Brazil) [PDF]

Anais da Academia Brasileira de Ciências, 2011
Growth ring analysis on silicified coniferous woods from the Missão Velha Formation (Araripe Basin - Brazil) has yielded important information about periodicity of wood production during the Early Cretaceous in the equatorial belt.
Etiene F. Pires, Margot Guerra-Sommer
doaj   +5 more sources

Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil. [PDF]

Anat Rec (Hoboken)
Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Eltink E, da Silva KR, de França MAG, de Morais DMF, Soto M, Duffin CJ.   +5 more
europepmc   +2 more sources

The influence of the forest corridors to the north of the Andes on the diversification of the bright-rumped Attila, Attila spadiceus (Passeriformes, Tyrannidae), during the climatic oscillations of the middle Pleistocene. [PDF]

Ecol Evol
Our findings highlight the significance of Pleistocene Forest corridors north of the Andes as the key factor maintaining communication before the separation of the lineages of A. spadiceus. We highlight the absence of any significant differentiation between the disjunct Amazonian and Atlantic Forest populations, both part of the Cis‐Andean lineage. The
Mendonça P, Carneiro LS, Leandro-Silva V, Aleixo A, Araripe J, Rêgo PS.   +5 more
europepmc   +2 more sources

New Species of Babinskaiidae (Insecta: Neuroptera) From the Mid-Cretaceous of Myanmar and the Morphological Divergence of the Family Across the Cretaceous. [PDF]

Ecol Evol
Two new species of Babinskaiidae are reported from the mid‐Cretaceous of Myanmar and the morphological divergence of the family across the Cretaceous is quantified. The Babinskaiidae assemblages from the Lower Cretaceous Crato Formation and the Upper Cretaceous Kachin amber are separated by a pronounced morphological divergence in both overall size and
Lu X, Luo Y, Zhuo, Liu X.
europepmc   +2 more sources