Results 31 to 40 of about 1,581,105 (192)

A new occurrence of tetrapod footprints from the Late Triassic of the Candelária Sequence, Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract The Hyperodapedon Assemblage Zone of the Candelária Sequence (Santa Maria Supersequence, Paraná Basin) preserves one of the most significant Late Triassic continental vertebrate assemblages in southern Brazil. Despite the relatively well‐documented body fossil record from this interval, ichnological records remain comparatively scarce.
Murilo Andrade‐Silva   +1 more
wiley   +1 more source

Redescription of the cranial morphology of Amphisbaena braestrupi and Amphisbaena laurenti (Squamata: Amphisbaenidae) from the Pleistocene of Brazil using x‐ray computed tomography

open access: yesThe Anatomical Record, EarlyView.
Abstract Amphisbaenians (Squamata: Amphisbaenidae) are fossorial reptiles with highly specialized cranial morphology, yet their fossil record is frequently limited by fragmentary preservation. This study provides a detailed osteological redescription of the skulls of Amphisbaena braestrupi and Amphisbaena laurenti from the Pleistocene of Lagoa Santa ...
Carolina L. Paiva   +2 more
wiley   +1 more source

Longitudinal gradient in limnological variables in the Upper Paraná River: a brief description and the importance of undammed tributaries

open access: yesActa Limnologica Brasiliensia, 2017
Aim: Describe the limnological pattern in a longitudinal gradient in the Paraná River, a highly dammed river, in a stretch localized between two dams, but rich in undammed tributaries.
Natália Fernanda Santana   +5 more
doaj   +1 more source

Conservation status and bio-ecology of Brycon orbignyanus (Characiformes: Bryconidae), an endemic fish species from the Paraná River basin (Brazil) threatened with extinction [PDF]

open access: yesNeotropical Ichthyology, 2019
Brycon orbignyanus is an endemic species from La Plata basin whose stocks have been presenting significant reductions throughout the Paraná River. Brycon orbignyanus is categorized as an endangered species. This study evaluated aspects of the bio-ecology
Lívia Helena Tonella   +4 more
doaj   +1 more source

Bioerosion traces in bones reveal an increase in ethological diversity in the insect exploitation of carcasses in the late Triassic

open access: yesThe Anatomical Record, EarlyView.
Abstract This study presents the first detailed description of bioerosion traces produced by insects in bones from the Santa Cruz Sequence (early Carnian, Santa Maria Supersequence, Brazil). An array of traces is reported, consisting of notches, a tube, trails of grooves attributed to the ichnotaxon Osteocallis mandibulus and ornamented depressions ...
Lucca S. Cunha   +2 more
wiley   +1 more source

Impacto das grandes enchentes na estrutura fundiária da planície aluvial do Rio Paraná, na Argentina [PDF]

open access: yes, 2008
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Civil.Nesta pesquisa se propõe mostrar o impacto das grandes enchentes na estrutura fundiária das ilhas que compõem a planície ...
Gardiol, Mario Ruben
core  

Study area: Upper Paraná River floodplain–Xambrê Lake, Parque Nacional de Ilha Grande, Paraná State, Brazil.

open access: yes, 2015
Study area: Upper Paraná River floodplain–Xambrê Lake, Parque Nacional de Ilha Grande, Paraná State, Brazil.
Rosilene Luciana Delariva (820783)   +3 more
core   +1 more source

Rickettsia parkeri in Argentina

open access: yesEmerging Infectious Diseases, 2008
Clinical reports of an eschar-associated rickettsiosis in the Paraná River Delta of Argentina prompted an evaluation of Amblyomma triste ticks in this region. When evaluated by PCR, 17 (7.6%) of 223 questing adult A.
Santiago Nava   +5 more
doaj   +1 more source

Comparison between environmental impacts generated during the implementation phase of a hydroelectric power plant and a photovoltaic power plant

open access: yesEnvironmental Progress &Sustainable Energy, EarlyView.
Abstract This study analyzes the environmental impacts associated with the implementation phase of a photovoltaic power plant, comparing them to the impacts of a hydroelectric power plant, based on real data obtained from Environmental Impact Assessments (EIA) and Environmental Impact Reports (RIMA).
Louise Molnar Fedyna   +2 more
wiley   +1 more source

Genetic variability and evidence of founder effect in Hemiodus orthonops (Characiformes: Hemiodontidae) from the upper Paraná River basin, Brazil

open access: yesActa Scientiarum: Biological Sciences, 2017
  Hemiodus orthonops is a small fish of the Hemiodontidae family, order Characiformes, with a maximum of 25 cm standard length. Until recently, H. orthonops was an endemic species from the Paraná-Paraguay basin and it was absent from the upper Paraná ...
Liégie Alher Marques, Erasmo Renesto
doaj   +1 more source

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