Results 11 to 20 of about 766,246 (195)

New data on Beurlenia araripensis Martins-Neto & Mezzalira, 1991, a lacustrine shrimp from Crato Formation, and its morphological variations based on the shape and the number of rostral spines. [PDF]

PLoS ONE, 2021
Fossil freshwater carideans are very rare worldwide. Here, we present new taxonomic remarks about Beurlenia araripensis from the Early Cretaceous laminated limestones of the Crato Formation, Araripe Basin, northeastern Brazil.
Olga Alcântara Barros, Maria Somália Sales Viana, Bartolomeu Cruz Viana, João Hermínio da Silva, Alexandre Rocha Paschoal, Paulo Victor de Oliveira   +5 more
doaj   +2 more sources

Interpreting character variation in turtles: Araripemys barretoi (Pleurodira: Pelomedusoides) from the Araripe Basin, Early Cretaceous of Northeastern Brazil [PDF]

PeerJ, 2020
The Araripe Basin (Northeastern Brazil) has yielded a rich Cretaceous fossil fauna of both vertebrates and invertebrates found mainly in the Crato and Romualdo Formations, of Aptian and Albian ages respectively.
Saulo Limaverde, Rodrigo Vargas Pêgas, Rafael Damasceno, Chiara Villa, Gustavo R. Oliveira, Niels Bonde, Maria E.C. Leal   +6 more
doaj   +3 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

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

Hyperdominant Trees Reveal Savanna Vulnerability Under Climate Change. [PDF]

Glob Chang Biol
The Brazilian Cerrado's forest structure relies disproportionately on just 30 hyperdominant tree species, which represent 50% of all individuals despite accounting for only 2% of species richness. This study evaluates their vulnerability under climate change scenarios for 2100.
Alvarez F, Marimon-Junior BH, Marimon BS, da Cruz WJA, Júnior NGR, Béu RG, da Conceição Bispo P, de Souza Medeiros A, Siqueira GM, Bueno ML, de Gois Aquino F, Guilherme FAG, Pinto JRR, Mews HA, Walter BMT, do Couto de Miranda S, Haidar RF, de Oliveira EL, Brandão RDF, Matricardi EAT, Munhoz CBR, de Souza Lima E, Carniello MA, da Cunha Bustamante MM, Morandi PS, de Oliveira EA, Finger Z, das Neves EC, Elias F, Menor IO, de Almeida Reis SM, Phillips O, Feldpausch TR.   +32 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

Unmasking a gap: A new oligoneuriid fossil (Ephemeroptera: Insecta) from the Crato Formation (upper Aptian), Araripe Basin, NE Brazil, with comments on Colocrus McCafferty. [PDF]

PLoS ONE, 2020
The Crato Formation (Araripe Basin) preserves one of the most diverse entomofaunas of the Cretaceous. Among the groups of insects, mayflies stand out in abundance, but among them oligoneuriids are especially rare.
Arianny P Storari, Taissa Rodrigues, Antonio A F Saraiva, Frederico F Salles   +3 more
doaj   +2 more sources

Fossil‐Bearing Concretions of the Araripe Basin Accumulated During Oceanic Anoxic Event 1b

Paleoceanography and Paleoclimatology, 2023
Fossils from the Araripe Basin (northeastern Brazil) are known for their remarkable preservation of vertebrates and invertebrates, even including soft tissues. They occur in carbonate concretions within organic carbon‐rich strata assigned to the Romualdo
M. H. H. Bom, K. Kochhann, U. Heimhofer, M. A. L. Mota, R. M. Guerra, M. G. Simões, G. Krahl, V. Meirelles, D. Ceolin, F. Fürsich, F. H. O. Lima, G. Fauth, M. Assine   +12 more
semanticscholar   +2 more sources

The palate and choanae structure of the Susisuchus anatoceps (Crocodyliformes, Eusuchia): phylogenetic implications [PDF]

PeerJ, 2018
Crocodyliformes is a group with a broad fossil record, in which several morphological changes have been documented. Among known transformations the most iconic is perhaps the series of changes seen in the structural evolution of the choanae.
Karla J. Leite, Daniel C. Fortier
doaj   +3 more sources

For your eyes too: a new set of images of biological materials from the scientific commissioning of the MOGNO beamline at Sirius. [PDF]

J Synchrotron Radiat
From whole specimens to histological level reconstructions, images derived from 3D synchrotron‐based microtomography (SR‐microCT) have emerged as a tool that is revolutionizing a wide range of biological research. This paper presents the first commissioning results from experiments to image the anatomy of small animals and specimens from zooarchaeology
Colaço MV, Alvarenga T, Archilha NL, Barroso E, Colaço G, Cupello C, da Silva HR, Fidalgo G, Garcia AM, Oliveira S, Paiva K, Sena G, Tanure T, Barroso RC.   +13 more
europepmc   +2 more sources