A5073253006- Paleontology and Evolutionary Biology
- Evolution and Paleontology Studies
- Ichthyology and Marine Biology
- Amphibian and Reptile Biology
- Paleontology and Stratigraphy of Fossils
- Geotourism and Geoheritage Conservation
- Geological formations and processes
- Geography and Environmental Studies
- Fish biology, ecology, and behavior
- Turtle Biology and Conservation
- Avian ecology and behavior
- Geochemistry and Geologic Mapping
- Fossil Insects in Amber
- Lepidoptera: Biology and Taxonomy
- Plant Diversity and Evolution
- Geological Studies and Exploration
- melanin and skin pigmentation
- Plant and animal studies
- Spatial Cognition and Navigation
- Animal Behavior and Reproduction
- Geology and Paleoclimatology Research
- Geological and Geophysical Studies Worldwide
National Water Agency
2020-2023
Departamento Nacional de Produção Mineral
2007-2019
Universidade Federal do Cariri
2012
Abstract The fossil record of birds in the Mesozoic Gondwana is mostly based on isolated and often poorly preserved specimens, none which has details feather anatomy. We provide description a bird represented by skeleton with feathers from Early Cretaceous (NE Brazil). specimen sheds light homology 3D structure rachis-dominated feathers, previously known two-dimensional slabs. rectrices exhibit row rounded spots, probably corresponding to some original colour pattern. supports identification...
Elucidating cardiac evolution has been frustrated by lack of fossils. One celebrated enigma in involves the transition from a outflow tract dominated multi-valved conus arteriosus basal actinopterygians, to an commanded non-valved, elastic, bulbus higher actinopterygians. We demonstrate that preservation is possible extinct fish Rhacolepis buccalis Brazilian Cretaceous. Using X-ray synchrotron microtomography, we show fossils display hearts with containing at least five valve rows. This...
Abstract Melanosomes (melanin-bearing organelles) are common in the fossil record occurring as dense packs of globular microbodies. The organic component comprising melanosome, melanin, is often preserved fossils, allowing identification chemical nature constituent pigment. In present-day vertebrates, melanosome morphology correlates with their pigment content selected melanin-containing structures, and this interdependency employed color reconstruction extinct animals. lack analyses...
A new specimen of Tupandactylus imperator, comprising an incomplete skull with associated lower jaw, is described.The material the best preserved this species known so far and provides information on anatomy pterodactyloid pterosaur, especially respect to morphology first one formally described for species.Also, shows extensive preservation soft tissues such as soft-tissue component headcrest, ramphoteca premaxillae well probable pycnofibres.Aphylogenetic analysis was performed in order test...
<p>The fossil record of birds in Gondwana is almost restricted to the Late Cretaceous. Herein we describe a new from Araripe Basin, <italic>Cratoavis cearensis</italic> nov. gen et sp., composed an articulated skeleton with feathers attached wings and surrounding body. The present discovery considerably extends temporal Enantiornithes at South America Early For first time, complete Cretaceous bird documented.</p>
Gaffney, Campos &Hirayama, 2001 and Euraxemys essweini Tong &Meylan, 2006. Except for A. barretoi, known from both, the Romualdo Crato formations, all other turtle taxa are restricted to Formation.Fragments of skull, an incomplete lower jaw carapace first remains Ipubi Formation reported here.This material was collected in shales above gypsum layer, close contact with (Aptian-Albian).Compared turtles Santana Group, this specimen is referred Pelomedusoides, excluding Araripemys Brasilemys,...
The abandoned state and depredation of the paleontological geosites at Rio do Peixe basins have been for some time a reason concern to authorities society. Removal sand from Monumento Natural Vale dos Dinossauros Park removal fossils sites catalogued by SIGEP (Comissão Brasileira de Sítios Geológicos e Paleobiológicos) made public recognized through this study. aims paper are to: georeference basins, provide diagnostic vunerability these sites, establish proposals protection measures. Ten...
The fossil record of Early Cretaceous birds in South America has been restricted to members Enantiornithes from the Crato Formation (Aptian) Brazil. Here we describe a new genus and species bird discovered at Pedra Branca Mine, Nova Olinda County, Ceará State, Brazil, which adds avian Formation. specimen is represented by an isolated foot that exposed plantar view. A plantarly displaced metatarsal III with well-developed hypotarsus supports its referral Ornithuromorpha, representing oldest...
The specimens attributed to "Pricesaurus megalodon" are re-examined in order determine whether they constitute a distinct taxon of pterodactyloid pterosaur.After careful preparation and study, the material (rostral middle parts two probably skulls) revealed affinities with Anhangueridae, especially genus anhanguera Campos & Kellner.The is considered here nomen nudum for lacking distinctive diagnostic features being published noncompliance standards International Code Zoological Nomenclature.
ABSTRACT: The fossil record of birds in Gondwana is almost restricted to the Late Cretaceous. Herein we describe a new from Araripe Basin, Cratoavis cearensis nov. gen et sp., composed of an articulated skeleton with feathers attached wings and surrounding body. present discovery considerably extends temporal Enantiornithes at South America Early For first time, complete Cretaceous bird documented.