Results 81 to 90 of about 2,118 (215)

A nursery site of the Alaska skate (Bathyraja parmifera) in the eastern Bering Sea [PDF]

, 2008
A nursery site for the Alaska skate (Bathyraja parmifera) was sampled seasonally from June 2004 to July 2005. At the small nursery site (~2 km2), located in a highly productive area near the shelf-slope interface at the head of Bering Canyon in the ...
Hoff, Gerald R.
core  

Earliest Danian outer neritic elasmobranch assemblages reveal an environmentally controlled faunal turnover at the Cretaceous–Palaeogene boundary in the northern Tethyan Realm (Austria)

Papers in Palaeontology, Volume 10, Issue 1, January/February 2024.
Abstract This study reports elasmobranch remains from two fossil‐rich horizons in the earliest Danian Olching Formation at Waidach, Austria. These outer neritic assemblages complement previous fine‐scale bulk‐sampling of latest Maastrichtian horizons at Waidach and document a regional elasmobranch faunal turnover across the Cretaceous–Palaeogene (K–Pg)
Iris Feichtinger, Jürgen Pollerspöck, Mathias Harzhauser, Gerald Auer, Stjepan Ćorić, Matthias Kranner, Bernhard Beaury, Guillaume Guinot   +7 more
wiley   +1 more source

БИОСТРАТИГРАФИЯ И ИЗМЕНЕНИЕ ПАЛЕОБИОТЫ НА ГРАНИЦЕ ПАЛЕОЦЕНА И ЭОЦЕНА В РАЗРЕЗЕ ПЕРШИНСКИЙ (СРЕДНЕЕ ЗАУРАЛЬЕ)

Литосфера, 2019
Выполнено описание разреза и биостратиграфическое расчленение палеогеновых отложений в разрезе Першинский, расположенном в южной части Среднего Зауралья (Курганская область). Проанализированы изменения состава морской микро- (динофлагеллаты) и макробиоты

doaj  

Diagnosi morfologica delle capsule ovigere dei condroitti mediterranei. Metodiche di studio, biologia e chiavi di determinazione specifica [PDF]

, 2015
Le capsule ovigere possono assumere importanza fondamentale nella determinazione indiretta della specie di appartenenza. A tal fine è stata impostata una chiave dicotomica per il loro riconoscimento specifico.
Mancusi, Cecilia, Serena, Fabrizio
core  

Dichichthyidae, a New Family of Deepwater Sharks (Carcharhiniformes) from the Indo–West Pacific, with Description of a New Species

Fishes
The genus Dichichthys was resurrected for five species previously allocated to the genus Parmaturus in the family Pentanchidae. Supraorbital crests on the chondrocranium distinguish Dichichthys from Parmaturus and other members of the family Pentanchidae.
William T. White, Andrew L. Stewart, Helen L. O’Neill, Gavin J. P. Naylor   +3 more
doaj   +1 more source

New records of the lollipop catshark Cephalurus cephalus (Scyliorhinidae) from the Gulf of California, Mexico Nuevos registros del tiburón renacuajo Cephalurus cephalus (Scyliorhinidae) en el golfo de California, México

Revista Mexicana de Biodiversidad, 2012
On February 11th 2007, 13 neonates and 4 adults of Cephalurus cephalus were collected using a benthic sledge, during one oceanographic cruise (Talud X, St. 12) in the mid Gulf of California, Mexico (28°01'36" N, 111°51'50" W). The lollipop catsharks were
Hugo Aguirre-Villaseñor, Carolina Salas-Singh   +1 more
doaj  

Temporal niche partitioning as a potential mechanism for coexistence in two sympatric mesopredator sharks

Frontiers in Marine Science
Global marine biodiversity declines require bold and ambitious plans to safeguard ecosystem services. Overfishing, habitat loss and projected climate impacts have yielded deleterious effects on marine predators, in particular, driving increasing threat ...
Neil D. Cook, Abbie Jenkins, Sarah L. Perry, Sarah E. Perkins, Jo Cable   +4 more
doaj   +1 more source

Condrictios de la Argentina y Uruguay: lista de trabajo [PDF]

, 2007
Presentamos aquí una lista actualizada de los condrictios (tiburones, rayas, quimeras y pez elefante) que han sido citados de la Argentina y Uruguay, incluyendo las especies de agua dulce de la familia Potamotrygonidae.
Lucifora, Luis O., Menni, Roberto C.
core  

Reflexions sur la systematique des Galeoidei et sur les affinités du genre Cetorhinus à l'occasion de la découverte d'elements de la denture d'un exemplaire fossile dans les sables du Kattendijk à Kallo (Pliocene inferieur, Belgique) [PDF]

, 1979
The discovery of some two hundred and one teeth and of a lot of poorly scattered gill rakers referable to a single specimen of Cetorhinus drive us to express a lot of reflexions concerning affinities of genus Cetorhinus and the systematic of the ...
Herman, J.
core  

¿ES POSIBLE CRIAR TIBURONES?: EL CASO DE LA PINTARROJA COMUN, SCHROEDERICHTHYS CHILENSIS (CHONDRICHTHYES, SCYLIORHINIDAE) IS IT POSSIBLE TO BREED SHARKS IN CAPTIVITY?: THE CASE OF THE DOGFISH, SCHROEDERICHTHYS CHILENSIS (CHONDRICHTHYES, SCYLIORHINIDAE)

Gayana, 2005
La crianza de animales es un fenómeno asociado a los orígenes del hombre moderno. Sin embargo, la crianza de especies marinas está relacionada con la producción intensiva en cultivo con fines comerciales.
Nicole Piaget, Sebastián Hernández, Julio Lamilla, Alonso Vega   +3 more
doaj