Results 31 to 40 of about 500 (140)

Shrimps from the Santana Group (Cretaceous: Albian): new species (Crustacea: Decapoda: Dendrobranchiata) and new record (Crustacea: Decapoda: Caridea)

Anais da Academia Brasileira de Ciências, 2014
The fossil shrimp Araripenaeus timidus n. gen. n. sp. is the first fossil Penaeoidea from Brazil. Here, we describe, illustrate and compare it with Paleomattea deliciosa, a fossil Sergestoidea (Dendrobranchiata) previously described from the same region.
ALLYSSON P. PINHEIRO, ANTÔNIO ÁF. SARAIVA, WILLIAM SANTANA   +2 more
doaj   +1 more source

On the occurrence of pterosauria in Exu, Pernambuco (lower cretaceous Romualdo Formation, Araripe Basin), Northeastern Brazil

Estudos Geológicos, 2014
Este trabalho descreve um osso isolado de pterossauro da Formação Romualdo (Aptiano / Albiano) coletado em um novo sitío fossilífero na porção sudeste da Bacia do Araripe. O espécime (DGEO-CTG-UFPE 7516) consiste em uma ulna preservada em três dimensões que apresenta semelhanças morfológicas com os Pteranodontoidea e é tentativamente referido a ...
Tito Aureliano, Aline M. Ghilardi, Rudah R. C. Duque, Alcina M. F. Barreto   +3 more
openaire   +1 more source

First Occurrence and Paleo-Ecological Implications of Insects (Orthoptera: Ensifera Gryllidae) in the Romualdo Member of the Santana Formation, Eo-Cretaceous of the Araripe Basin

Anais da Academia Brasileira de Ciências
The Romualdo Member of the Santana Formation, a lithostatigraphic unit attributed to a marine intrusion, is famous for its preserved fossils in calcareous concretions, which stand out for their diversity and excellent preservation levels. This paper aims
LUÍS C.B. FREITAS, GERALDO J.B. DE MOURA, ANTÔNIO A.F. SARAIVA   +2 more
doaj   +1 more source

Estudo de coprólito da bacia sedimentar do Araripe por meios de espectroscopia FT-IR e difração de Raios-X Study of coprolites from the Araripe sedimentary basin through FT-IR spectroscopy and x-ray diffraction

Química Nova, 2007
Coprolites are fossilized faeces that constitute an important source of palaeobiological informations. This paper describes the characterization of some coprolite materials originated from the Romualdo Member of the Santana Formation (Araripe Basin ...
Ricardo Jorge Cruz Lima, Paulo de Tarso Cavalcante Freire, José Marcos Sasaki, Antonio Álamo Feitosa Saraiva, Silvania Lanfredi, Marcos Augusto de Lima Nobre   +5 more
doaj   +1 more source

Aspectos Tafonômicos de Testudines da Formação Santana (Cretáceo Inferior),Bacia do Araripe, Nordeste do Brasil. [PDF]

Anuário do Instituto de Geociências, 2007
Araripe Basin is worldwide famous by diverse and exquisitely well preserved fossil assemblages in antana Formation. This lithostratigraphic unit is subdivided into three members: Crato, Ipubi and Romualdo.
Gustavo Ribeiro de Oliveira
doaj  

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

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. However, much of the paleoecological and paleobiogeographical information on these organisms is scarce in the literature.
Gomes, Bruno de Araújo, Prado, Ludmila Alves Cadeira do, Barreto, Alcina Magnólia Franca   +2 more
openaire   +2 more sources

Stratigraphic Relations of the Ipubi Formation: Siliciclastic-Evaporitic Succession of the Araripe Basin

Anais da Academia Brasileira de Ciências, 2018
The Ipubi Formation represents the Aptian-Albian siliciclastic-evaporitic succession of Araripe Basin, NE Brazil. This succession comprises siliciclastic rocks (bituminous shales and claystones) and evaporites (gypsum and secondary anhydrite) and ...
CARLOS E. FABIN, OSVALDO J. CORREIA FILHO, MÁRCIO L. ALENCAR, JOSÉ A. BARBOSA, TIAGO S. DE MIRANDA, VIRGÍNIO H. NEUMANN, IGOR F. GOMES, FELIPE R. DE SANTANA   +7 more
doaj   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

The Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison, James Gregory, Christopher Jackson, Jordan Bestwick, Katlin Schroeder, Samuel J.L. Gascoigne, Paul Bills, Laura B. Porro, Philip D. Mannion, Paul M. Barrett   +9 more
wiley   +1 more source

More Science Than Art: The First Botanical Garden in Portugal (c. 1650)

Renaissance Studies, EarlyView.
ABSTRACT Gabriel Grisley, a German physician, came to Portugal and founded a garden near the Xabregas River in Lisbon, during the 1610s under the Spanish kings' rule. In view of the utility a botanic garden represented for the kingdom, he was able to obtain a royal privilege from King João IV during the Restauration War against the Spanish (1640–1668).
Ana Duarte Rodrigues
wiley   +1 more source

Synthesis, characterization, and performance of x_MoO3/Z‐22 and x_MoO3/MMP catalysts for biodiesel production

The Canadian Journal of Chemical Engineering, Volume 104, Issue 6, Page 2820-2841, June 2026.
Methyl transesterification of soybean oil using heterogeneous catalysts for biodiesel production. Abstract The growing global demand for renewable fuels has driven the search for efficient catalysts in biodiesel production. This study presents the synthesis and characterization of x_MoO3/Z‐22 and x_MoO3/MMP heterogeneous catalysts, and evaluates the ...
André Miranda da Silva, Vitória de Andrade Freire, José Jailson Nicácio Alves, Romualdo Rodrigues Menezes, Bianca Viana de Sousa Barbosa   +4 more
wiley   +1 more source