Results 41 to 50 of about 4,091 (207)

New evidence of feathers in the Crato Formation supporting a reappraisal on the presence of Aves

Anais da Academia Brasileira de Ciências, 2011
The preservation of delicate structures such as feathers is very rare in the paleontological record, due to the fragility of their components. Fossil feathers have been reported from approximately 50 deposits around the world, from the Late Jurassic to ...
Juliana M. Sayão, Antonio A.F. Saraiva, Angelica M.K. Uejima   +2 more
doaj   +1 more source

Redescription of Tijubina pontei, an Early Cretaceous lizard (Reptilia; Squamata) from the Crato Formation of Brazil

Anais da Academia Brasileira de Ciências, 2012
The record of Gondwanan Mesozoic lizards is very poor. Among the few species described for this region there is Tijubina pontei, an Early Cretaceous lizard from the Crato Formation (late Aptian) of northeast Brazil.
Tiago R. Simões
doaj   +1 more source

Evolution of reproductive strategies in dictyopteran insects—clues from ovipositor morphology of extinct roachoids [PDF]

Acta Palaeontologica Polonica, 2018
Dictyoptera, which comprises cockroaches, termites and mantids, is a quite successful group of insects in evolutionary terms with a long fossil record—roachoid insects were already abundant 315 million years ago in the Carboniferous forests.
Marie K. Hörnig, Carolin Haug, Joerg W. Schneider, Joachim T. Haug   +3 more
doaj   +1 more source

Potential of Eugenia brejoensis (Mazine) Essential Oil in Combating Multidrug-Resistant (MDR) Acinetobacter baumannii and Pseudomonas aeruginosa. [PDF]

Chem Biodivers
ABSTRACT The genus Eugenia has a long history of use in traditional medicine for treating various conditions, including infectious diseases, gastrointestinal disorders, and skin problems. Essential oils derived from Eugenia species are known for their medicinal properties and have been studied for their antimicrobial and bioactive potential. This study
de Araújo JM, de Barros AV, Santos FHGD, De Oliveira WF, do Amaral Ferraz Navarro DM, da Silva MV, de Veras BO, de Vasconcelos JEL, Coutinho HDM, de Melo Oliveira MB, Dos Santos Correia MT.   +10 more
europepmc   +2 more sources

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

The Anatomical Record, EarlyView.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano, Aline M. Ghilardi, Jonatan Kaluza, Agustín G. Martinelli   +3 more
wiley   +1 more source

Physicochemical characteristics of organic honey samples of africanized honeybees from Paraná River islands. [PDF]

, 2011
This research was carried out to evaluate the physicochemical composition of organic honey in Paraná River islands, in Porto Brasílio, State of Paraná. Honey was harvested directly from super of the colonies in three apiaries spread in the Floresta and ...
Alves, Eloi Machado, Anacleto, Daniela de Almeida, Marchini, Luis Carlos, Neves, Carolina Antunes, Sereia, Maria Josiane, Toledo, Tiago Cleyton Simões de Oliveira Arnaut de, Toledo, Vagner de Alencar Arnaut de   +6 more
core   +3 more sources

The coelurosaur theropods of the Romualdo formation, early Cretaceous (Aptian) of Brazil: Santanaraptor placidus meets Mirischia asymmetrica

The Anatomical Record, EarlyView.
Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt, Orlando Nelson Grillo, Christophe Hendrickx, Maximilian Kellermann, Max Cardoso Langer   +4 more
wiley   +1 more source

Enhancement of antimicrobial activity of antibiotics and antifungals by the use of natural products from Pityrogramma calomelanos (L.) link [PDF]

, 2012
The ethanol extract and methanol fraction of Pityrogramma calomelanos (L.) link were evaluated for antibacterial, antifungal and modulatory activities against strains of Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans,
Costa José G.M., Coutinho Henrique D.M., Morais-Braga Maria F.B., Saraiva Antônio A.F., Souza Teógenes M.   +4 more
core   +1 more source

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

The Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano, Matheus P. S. Rocha, Francisco P. Lima‐Filho, Aline M. Ghilardi   +3 more
wiley   +1 more source

Paleometric approaches reveal striking differences in the insect fossilization of two Mesozoic Konservat-Lagerstätten

Frontiers in Ecology and Evolution
The Crato Formation (Lower Cretaceous, Brazil) is a Konservat-Lagerstätte preserving a great number of exceptionally well-preserved insects. Here, we sought to explore the preservational modes of two abundant aquatic and terrestrial groups of this unit ...
Arianny P. Storari, Gabriel L. Osés, Gabriel L. Osés, Arnold H. Staniczek, Marcia Rizzutto, Ronny Loeffler, Taissa Rodrigues   +6 more
doaj   +1 more source