Results 141 to 150 of about 656 (162)
MicroCT survey of larval skeletal mineralization in the Cuban gar Atractosteus tristoechus (Actinopterygii; Lepisosteiformes) [PDF]
MorphoMuseuM, 2017 Using X-ray microtomography, we describe the ossification events during the larval development of a non-teleost actinopterygian species: the Cuban gar Atractosteus tristoechus from the order Lepisosteiformes. We provide a detailed developmental series for each anatomical structure, covering a large sequence of mineralization events going from an early ...
Raphaël Scherrer +2 more
exaly +3 more sources
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Journal of Fish Biology, 2021
AbstractLarval attachment organs (LAOs) are unicellular or multicellular organs that allow larvae to adhere to a substrate before yolk‐sac absorption and the free‐swimming stage. This study documents the LAO of tropical gar, Atractosteus tropicus, using a combination of scanning electron microscopy and light microscopy.
Amanda K. Pinion +5 more
openaire +2 more sources
AbstractLarval attachment organs (LAOs) are unicellular or multicellular organs that allow larvae to adhere to a substrate before yolk‐sac absorption and the free‐swimming stage. This study documents the LAO of tropical gar, Atractosteus tropicus, using a combination of scanning electron microscopy and light microscopy.
Amanda K. Pinion +5 more
openaire +2 more sources
General and Comparative Endocrinology, 2020
The Holostei group occupies a critical phylogenetic position as the sister group of the Teleostei. However, little is known about holostean pituitary anatomy or brain distribution of important reproductive neuropeptides, such as the gonadotropin-inhibitory hormone (GnIH).
Francisco Javier Toledo Solis +2 more
exaly +4 more sources
The Holostei group occupies a critical phylogenetic position as the sister group of the Teleostei. However, little is known about holostean pituitary anatomy or brain distribution of important reproductive neuropeptides, such as the gonadotropin-inhibitory hormone (GnIH).
Francisco Javier Toledo Solis +2 more
exaly +4 more sources
Journal of South American Earth Sciences
The Bauru Group in Brazil is renowned for its rich and diverse fossil record from Late Cretaceous age, which includes a variety of vertebrates such as fishes, anurans, turtles, squamates, mesoeucrocodylians, and dinosaurs. In this study, we present compelling evidence for the existence of a distinct taxon of Lepisosteidae at a paleontological site ...
Giorgio Basilici, Agustín G Martinelli
exaly +3 more sources
The Bauru Group in Brazil is renowned for its rich and diverse fossil record from Late Cretaceous age, which includes a variety of vertebrates such as fishes, anurans, turtles, squamates, mesoeucrocodylians, and dinosaurs. In this study, we present compelling evidence for the existence of a distinct taxon of Lepisosteidae at a paleontological site ...
Giorgio Basilici, Agustín G Martinelli
exaly +3 more sources
Copeia, 2014
The lower jaw of Lepisosteus osseus has been described as containing a U-shaped cartilaginous structure identified as a detached portion of Meckel's cartilage. We investigated this structure through study of a growth series of L. osseus, including cleared-and-stained specimens and histological preparations.
Hilton, E. J. +3 more
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The lower jaw of Lepisosteus osseus has been described as containing a U-shaped cartilaginous structure identified as a detached portion of Meckel's cartilage. We investigated this structure through study of a growth series of L. osseus, including cleared-and-stained specimens and histological preparations.
Hilton, E. J. +3 more
openaire +1 more source
Brazilian Journal of Geology, 2013 Estudos recentes revelaram a ocorrencia de peixes fosseisineditos na Formacao Sao Sebastiao, Sub-bacia de Tucano Central, Nordestedo Brasil. O material consiste em escamas e ossos isolados, alem deum exemplar em posicao de articulacao. Os exemplares foram identificadoscomo “Lepidotes” sp., “Lepidotes” oliveirai e “Lepidotes” spp.
Rafael Costa da Silva
exaly +2 more sources
Cretaceous Research, 2016
Abstract Here we report the first †obaichthyid gar from the Lower Cretaceous (Aptian) Codo Formation of the Parnaiba Basin, Northeastern Brazil. It shows the following obaichthyid characters: numerous odontods firmly attached to the outer surface of the dermal bones, free and mobile maxilla, presence of interopercle, lack of contact between the ...
Paulo M Brito +2 more
exaly +2 more sources
Abstract Here we report the first †obaichthyid gar from the Lower Cretaceous (Aptian) Codo Formation of the Parnaiba Basin, Northeastern Brazil. It shows the following obaichthyid characters: numerous odontods firmly attached to the outer surface of the dermal bones, free and mobile maxilla, presence of interopercle, lack of contact between the ...
Paulo M Brito +2 more
exaly +2 more sources
Historical Biology, 2019
Ginglymodian fishes formed one of the most dominant actinopterygian lineages during the Mesozoic, occurring in fully marine to freshwater depositional environments. However, although commonly preserved in Mesozoic strata around the world, there is little information on the feeding ecology of these fishes, which is mainly due to the scarcity of direct ...
Detlev Thies +2 more
openaire +1 more source
Ginglymodian fishes formed one of the most dominant actinopterygian lineages during the Mesozoic, occurring in fully marine to freshwater depositional environments. However, although commonly preserved in Mesozoic strata around the world, there is little information on the feeding ecology of these fishes, which is mainly due to the scarcity of direct ...
Detlev Thies +2 more
openaire +1 more source
Journal of Vertebrate Paleontology, 2016
A new ginglymodian fish, Khoratichthys gibbus, gen. et sp. nov., is described based on the impression of a single articulated fish preserved on a sandstone slab from the Late Jurassic–Early Cretaceous Phu Kradung Formation, northeastern Thailand. Khoratichthys gibbus is characterized by a distinct humpbacked body with elongate posterior spines on the ...
uthumporn deesri, Lionel Cavin
exaly +2 more sources
A new ginglymodian fish, Khoratichthys gibbus, gen. et sp. nov., is described based on the impression of a single articulated fish preserved on a sandstone slab from the Late Jurassic–Early Cretaceous Phu Kradung Formation, northeastern Thailand. Khoratichthys gibbus is characterized by a distinct humpbacked body with elongate posterior spines on the ...
uthumporn deesri, Lionel Cavin
exaly +2 more sources