Results 71 to 80 of about 1,233 (179)

Metacercarias del tipo Paramonilicaecum (Digenea: Didymozoidae), parásitos accidentales de elasmobranquios (Elasmobranchii) del golfo de México e identificación de metacercarias (Didymozoidae) de la Colección Nacional de Helmintos Metacercariae of the type Paramonilicaecum (Digenea: Didymozoidae), accidental parasites in elasmobranchs (Elasmobranchii) from the Mexican Gulf of Mexico and identification of metacercarias (Didymozoidae) of the Colección Nacional de Helmintos

Revista Mexicana de Biodiversidad, 2011
Como parte de un estudio sobre los helmintos parásitos de rayas (Elasmobranchii), se colectaron 12 ejemplares en 3 localidades del estado de Veracruz, México: Laguna de Tamiahua, Laguna de Tampamachoco y un arrecife de la costa del golfo de México.
Erick Rodríguez-Ibarra, Scott Monks, Griselda Pulido-Flores   +2 more
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КОМПЛЕКС ЭЛАСМОБРАНХИЙ ПОЗДНЕГО ЭОЦЕНА В ПЛЕЙСТОЦЕНОВОМ АЛЛЮВИАЛЬНОМ ТАФОЦЕНОЗЕ В СРЕДНЕМ ЗАУРАЛЬЕ: БИОСТРАТЕГРАФИЧЕСКОЕ И ПАЛЕОГЕОГРАФИЧЕСКОЕ ЗНАЧЕНИЕ

Литосфера, 2019
Изучен многочисленный комплекс остатков эласмобранхий (Chondrichthyes: Elasmobranchii) из Зауралья, переотложенный из палеогеновых в аллювиальные верхнеплейстоценовые отложения. Комплекс происходит из одного геологического источника, насчитывает около 20

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A dorsal fold in Gymnura micrura (Bloch and Scheneider, 1801) (Chondrichthyes: Gymnuridae)

Brazilian Archives of Biology and Technology, 2009
This paper reports a dorsal fold which is a membranous structure located on the tail of two juvenile butterfly rays, Gymnura micrura (Bloch & Scheneider, 1801), caught through artisanal fishery in the shallow waters of Maranhão State (Brazil).Neste ...
Jorge Luiz Silva Nunes, Nivaldo Magalhães Piorski   +1 more
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Biometric characterization of sharks of the genus Sphyrna (Griffith & Smith, 1834) on the coast of Sergipe

Biotemas, 2016
Sharks, rays and chimeras belonging to the subclass Elasmobranchii of the class Chondrichthyes have a slow maturation and development, and they are animals often caught as by-catch, making them vulnerable to extinction.
Jéssica Barros Andrade, Daniela Nascimento Santos, Maraisa de Oliveira Silva, Thays Brito Reis Santos, Thiago Silveira Meneses, Andressa Sales Coelho   +5 more
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Lamnoid vertebrae from the Agua Nueva Formation (Upper Cretaceous: lower Turonian), northeastern Mexico

Revista Mexicana de Ciencias Geológicas, 2018
A partial vertebral series of a lamniform shark (Chondrichthyes: Elasmobranchii) occurred in the “Vallecillo fish Member” of the Agua Nueva Formation (Upper Cretaceous: Lower Turonian) at Vallecillo, Mexico.
Alberto Blanco-Piñón, Kenshu Shimada, Gerardo González-Barba   +2 more
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Lista patrón de los tiburones, rayas y quimeras (Chondrichthyes, Elasmobranchii, Holocephali) de México [PDF]

Arxius de Miscel-lània Zoològica, 2016
Checklist of sharks, rays and chimaeras (Chondrichthyes, Elasmobranchii, Holocephali) from Mexico We present an annotated checklist of the species of sharks, rays and chimaeras (chondrichthyan fishes) occurring in Mexican waters, based on a thorough ...
Del Moral-Flores, L. F., Morrone, J. J., Alcocer Durand, J., Espinosa-Pérez, H., Pérez-Ponce De León, G.   +4 more
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Four new species of neotropical freshwater stingrays of the genus Paratrygon (Myliobatiformes: Potamotrygonidae) from clear water rivers of the Amazon basin

Neotropical Ichthyology
The second most diverse genus of the Potamotrygonidae, Paratrygon, with three previously recognized species, P. aiereba, P. orinocensis and P. parvaspina, is here expanded, with the description of four new species, each endemic to one of the four largest
Thiago Silva Loboda
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Length-weight relationship of 73 fish species caught in the southeastern inner continental shelf region of Brazil

Latin American Journal of Aquatic Research, 2014
The a and b parameters of the length-weight relationship (LWR) of the form W = aLb were estimated for 71 species of Actinopterygii and 2 Elasmobranchii, caught in the coastal region and inner shelf of southeastern Brazil. Estimates of b varied from 2.151
June F Dias, Wellington S Fernandez, Thassya C.S. Schmidt   +2 more
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A marginal marine fauna from the upper Dinosaur Park Formation, Canada

Vertebrate Anatomy, Morphology, Palaeontology
During the Late Cretaceous, the coastline of the epicontinental Western Interior Seaway in North America fluctuated in position, temporarily replacing some terrestrial ecosystems with shallow marine habitats.
Luke Nelson, Joshua Doyon, Alison Murray, Don Brinkman, Robert Holmes   +4 more
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Three-dimensional fossils of a Cretaceous collared carpet shark (Parascylliidae, Orectolobiformes) shed light on skeletal evolution in galeomorphs

Royal Society Open Science
A rich fossil record of teeth shows that many living shark families’ origins lie deep in the Mesozoic. Skeletal fossils of the sharks to whom these teeth belonged are far rarer and when they are preserved are often flattened, hindering understanding of ...
Richard P. Dearden, Zerina Johanson, Helen L. O’Neill, Kieran Miles, Emma L. Bernard, Brett Clark, Charlie J. Underwood, Martin Rücklin   +7 more
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