Search Results - "R de Carvalho, Marcelo"

Comparative morphology and systematics of the cookiecutter sharks, genus Isistius Gill (1864) (Chondrichthyes: Squaliformes: Dalatiidae) by de Figueiredo Petean, Flávia, R de Carvalho, Marcelo

“…The dalatiid genus Isistius Gill (1864) has three valid species currently recognized in the literature: Isistius brasiliensis Quoy & Gaimard (1824), I…”
Get full text

Towards a biologically meaningful classification of subterranean organisms: a critical analysis of the Schiner-Racovitza system from a historical perspective, difficulties of its application and implications for conservation by Trajano, Eleonora, de Carvalho, Marcelo R.

“…Subterranean organisms always attracted the attention of humans using caves with various purposes, due to the strange appearance of several among them and life…”
Get full text

Description of two extraordinary new species of freshwater stingrays of the genus Potamotrygon endemic to the rio Tapajós basin, Brazil (Chondrichthyes: Potamotrygonidae), with notes on other Tapajós stingrays by Carvalho, Marcelo R De

“…Stingrays from the rio Tapajós basin are reviewed based on material collected from its lower (i.e. from the mouth-lake to Itaituba), middle (from about the São…”
Get more information

A new subfamily, Styracurinae, and new genus, Styracura, for Himantura schmardae (Werner, 1904) and Himantura pacifica (Beebe & Tee-Van, 1941) (Chondrichthyes: Myliobatiformes) by Carvalho, Marcelo R De, Loboda, Thiago S, Silva, João Paulo C B Da

“…A new subfamily (Styracurinae, subfam. nov.) and genus (Styracura, gen. nov.) are erected for Trygon schmardae Werner, 1904 (type species) and Dasyatis…”
Get more information

Taxonomy and morphology of species of the genus Squalus Linnaeus, 1758 from the Southwestern Atlantic Ocean (Chondrichthyes: Squaliformes: Squalidae) by Viana, Sarah T De F, Carvalho, Marcelo R De, Gomes, Ulisses L

“…Squalus is a genus of reportedly cosmopolitan shark species that have a high taxonomic complexity due to difficulties in their morphological differentiation;…”
Get more information

A new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the Rio Negro, Amazonas, Brazil: the smallest species of Potamotrygon by Carvalho, Marcelo R De, Rosa, Ricardo S, Araújo, Maria Lúcia G De

“…A new species of Potamotrygon is described from the Rio Negro drainage, Amazonas, Brazil. In spite of being cited or pictured several times in the scientific…”
Get more information

Taxonomic review of catsharks of the Scyliorhinus haeckelii group, with the description of a new species (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) by Soares, Karla D A, Gomes, Ulisses L, Carvalho, Marcelo R De

“…Sharks of the genus Scyliorhinus from the southwestern Atlantic are reviewed; identification problems and taxonomic misinformation given in the literature are…”
Get more information

Systematics and morphology of Potamotrygon orbignyi (Castelnau, 1855) and allied forms (Chondrichthyes: Myliobatiformes: Potamotrygonidae) by Silva, João Paulo C B Da, Carvalho, Marcelo R De

“…The Neotropical freshwater stingray Potamotrygom orbignyi (Castelnau, 1855), and other similar "reticulated" species occurring in northern South American…”
Get more information

Phylogenetic relationships of Chanidae (Teleostei: Gonorynchiformes) as impacted by Dastilbe moraesi , from the Sanfranciscana basin, Early Cretaceous of Brazil by Ribeiro, Alexandre C., Poyato-Ariza, Francisco J., Bockmann, Flávio A., Carvalho, Marcelo R. de

“…ABSTRACT Fossil gonorynchiform fishes range from the Lower Cretaceous to the early Miocene, and are represented by a few dozen living species. The order is…”
Get full text

Freshwater sharks and rays by Lucifora, Luis O., Carvalho, Marcelo R. de, Kyne, Peter M., White, William T.

“…Lucifora et all introduce the biology of elasmobranchs —sharks and rays — living in freshwater…”
Get full text

Potamotrygon rex, a new species of Neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae) from the middle and upper rio Tocantins, Brazil, closely allied to Potamotrygon henlei (Castelnau, 1855) by Carvalho, Marcelo R De

“…A systematic revision of the rio Tocantins stingrays has confirmed the occurrence of a new species of Potamotrygon first discovered more than two decades ago…”
Get more information

Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology by Soares, Karla D. A., de Carvalho, Marcelo R.

“…The genus Scyliorhinus is part of the family Scyliorhinidae, the most diverse family of sharks and of the subfamily Scyliorhininae along with Cephaloscyllium…”
Get full text

Narcine baliensis, a new species of electric ray from southeast Asia (Chondrichthyes: Torpediniformes) by Carvalho, Marcelo R De, White, William T

“…A new species of numbfish, Narcine baliensis, sp. nov., is described from the tropical eastern Indian Ocean from Indonesia. It is superficially similar to N…”
Get more information

Corrigenda: Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology. Zoosystematics and Evolution 96(2): 345–395. https://doi.org/10.3897/zse.96.52420 by Soares, Karla D. A., Carvalho, Marcelo R. de

“…The genus Scyliorhinus is part of the family Scyliorhinidae, the most diverse family of sharks and of the subfamily Scyliorhininae along with Cephaloscyllium…”
Get full text

Evidence-Based Taxonomy: Labels as Illocutionary Acts by Valdecasas, Antonio G., Pelaéz, Marisa L., Wheeler, Quentin D., de Carvalho, Marcelo R.

“…Concepts in science have an important role: They delimit and specify objects, activities, processes, and abstract entities. When terms are diffuse, mean…”
Get full text

Morphological description of Dipturus mennii (Chondrichthyes: Elasmobranchii: Rajidae) and its differentiation from Dipturus trachyderma by Moreira, Renan A, Gomes, Ulisses L, Carvalho, Marcelo R. de

“…Squamation patterns and skeletal anatomy (neurocranium, visceral arches, synarcual cartilage, scapulocoracoid, puboischiadic bar, and mixopterigium) of…”
Get full text

Squalus shiraii sp. nov. (Squaliformes, Squalidae), a new species of dogfish shark from Japan with regional nominal species revisited by Viana, Sarah T. F. L., Carvalho, Marcelo R. de

“…A new species of deep-water dogfish shark, Squalus shiraii sp. nov. , is described herein as endemic to the tropical waters off Southern Japan. This species…”
Get full text

Potamotrygon boesemani (Chondrichthyes: Myliobatiformes: Potamotrygonidae), a new species of Neotropical freshwater stingray from Surinam by Rosa, Ricardo S.(Universidade Federal da Paraíba CCEN Departamento de Sistemática e Ecologia), Carvalho, Marcelo R. de(Universidade de São Paulo Instituto de Biociências Departamento de Zoologia), Wanderley, Cristiane de Almeida(Universidade Federal da Paraíba CCEN Departamento de Sistemática e Ecologia)

“…Potamotrygon boesemani, new species, is described from the Corantijn river drainage in Surinam. The species has a diagnostic dorsal color pattern formed by…”
Get full text

On the attribution of authorship for several elasmobranch species in Müller and Henle's Systematische Beschreibung der Plagiostomen (Chondrichthyes, Elasmobranchii) by Jones, Christian M, Driggers, 3rd, William B, Castro, José I, De Carvalho, Marcelo R

Get more information

The use of pelvic fins for benthic locomotion during foraging behavior in Potamotrygon motoro (Chondrichthyes: Potamotrygonidae) by Shibuya, Akemi, Carvalho, Marcelo R. de, Zuanon, Jansen, Tanaka, Sho

“…Synchronized bipedal movements of the pelvic fins provide propulsion (punting) during displacement on the substrate in batoids with benthic locomotion. In…”
Get full text