Results 21 to 30 of about 1,113 (96)

The oldest fossil record of the megamouth shark from the late Eocene of Denmark and comments on the enigmatic megachasmid origin [PDF]

Acta Palaeontologica Polonica, 2016
The megamouth shark (Lamniformes: Megachasmidae) has sporadic occurrences both in the present-day oceans and in the fossil record. In this paper, we describe a new megachasmid, Megachasma alisonae sp.
Kenshu Shimada, David J. Ward
doaj   +1 more source

New light on the trophic ecology of Carcharodon hastalis from teeth embedded in Miocene cetacean vertebrae from Calvert Cliffs in Maryland, USA

Acta Palaeontologica Polonica
Recent isotopic analyses of the teeth of the extinct lamnid Carcharodon hastalis showed that it fed at a comparable trophic level as was the fossil and modern great white shark, Carcharodon carcharias. Although there are many examples of shark bite marks
Stephen J. Godfrey, Victor J. Perez, Marcus Jones, Phillip F. Chapman, Nathan Spencer, Jason E. Osborne   +5 more
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Danger on the plate: human health risks derived from the consumption of angular angelshark (Squatina guggenheim) meat in southeastern Brazil

Frontiers in Toxicology
IntroductionShark and ray species are particularly vulnerable to pollutant bioaccumulation, including metals and metalloids, due to their k-strategist characteristics and mid–high trophic level.
Amanda Pontes Lopes, Amanda Pontes Lopes, Rebeca Dias de Souza Coutinho, Rebeca Dias de Souza Coutinho, Tatiana Dillenburg Saint’Pierre, Rachel Ann Hauser-Davis   +5 more
doaj   +1 more source

A new euselachian shark from the early Permian of the Middle Urals, Russia [PDF]

Acta Palaeontologica Polonica, 2017
The isolated teeth of a new euselachian shark Artiodus prominens Ivanov and Duffin gen. et sp. nov. have been found in the Artinskian Stage (Early Permian) of Krasnoufimskie Klyuchiki quarry (Sverdlovsk Region, Middle Urals, Russia).
Alexander O. Ivanov, Christopher J. Duffin, Serge V. Naugolnykh   +2 more
doaj   +1 more source

The current status of the Adriatic sea fish biodiversity

Frontiers in Marine Science, 2015
The marine biodiversity of the Mediterranean Sea is nowadays facing substantial structural changes in flora and fauna. Such changes were observed in the Adriatic Sea as well.
Jakov Dulčić, Lovrenc Lipej
doaj   +1 more source

Evidencia del máximo número de crías en la raya mariposa, Gymnura lessae (Myliobatiformes: Gymnuridae), en el Golfo de México

Acta Zoológica Lilloana, 2023
La raya mariposa menor Gymnura lessae es endémica del atlántico noroccidental, incluyendo al Golfo de México. Es una especie con dimorfismo sexual, vivípara y con un ciclo anual reproductivo. En esta contribución se confirma el máximo número de crías en
ANDY ALEXANDER LARA-ALCANTARA, OSCAR MENDEZ, LUIS FERNANDO DEL MORAL-FLORES   +2 more
doaj   +1 more source

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

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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Coastal rocky reef fishes of Santa Catarina's northern islands, Brazil

Frontiers in Marine Science, 2015
The coast of the state of Santa Catarina only has non-biogenic reefs, i.e. rocky and artificial reefs, and is considered the geographic south limit for many reef fish species.
Johnatas Adelir Alves, Leonardo Schlögel Bueno, Diogo Augusto Moreira, Alberto Teodorico Correia, Alberto Teodorico Correia   +4 more
doaj   +1 more source

Shark teeth from Pirabas Formation (Lower Miocene), northeastern Amazonia, Brazil [PDF]

Boletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2009
The shark fauna (Chondrichthyes: Elasmobranchii) of Pirabas Formation is one of the most representative and diversified of the Neogene of South America.
Sue Anne Regina Ferreira Costa, Martha Richter, Peter Mann de Toledo, Heloísa Maria Moraes-Santos   +3 more
doaj  

Ocorrência de vertebrados holocênicos marinhos, Elasmobranchii e Cetacea, no "Sambaqui de Camboinhas", ltaipu, Niterói, estado do Rio de Janeiro

Revista de Arqueologia, 1986
O ''sambaqui de Camboinhas" foi descoberto no interior de uma "duna fóssil", dentro das cotas altimétricas de 7-8m acima do nível do mar, num trecho da Praia de ltaipu, Niterói, RJ.
Fausto Luiz de Souza Cunha, Antenor Leitão de Carvalho, Gustavo Wilson Alves Nunan   +2 more
doaj   +1 more source