Results 61 to 70 of about 34,984 (290)

Shark teeth [PDF]

British Dental Journal, 2021
A, Venugopal, A, Marya, M I, Karobari
openaire   +2 more sources

Dental crown morphological variation and heterodonty in carcharhiniform sharks

The Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Evidence of cascading ecosystem effects following the loss of white sharks from False Bay, South Africa

Frontiers in Marine Science
Graphical AbstractThis study provides empirical evidence of a trophic cascade following the loss of white sharks (Carcharodon carcharias) from False Bay, South Africa.
Neil Hammerschlag, Yakira Herskowitz, Chris Fallows, Thiago B. A. Couto, Thiago B. A. Couto   +4 more
doaj   +1 more source

First records of the sicklefin lemon shark, Negaprion acutidens, at Palmyra Atoll, central Pacific : a recent colonization event? [PDF]

, 2014
The range of the sicklefin lemon shark (Negaprion acutidens) is expanded to include Palmyra Atoll, in the Northern Line Islands, central Pacific. Despite the fact that researchers have been studying reef and lagoon flat habitats of the Atoll since 2003 ...
Caselle, Jennifer, Bradley, Darcy, Wood, Chelsea, McCauley, Douglas, Pollock, Amanda L., Papastamatiou, Yannis   +5 more
core   +1 more source

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato, Luke E. Nelson, Joshua A. Doyon, Donald B. Brinkman, Alison M. Murray   +4 more
wiley   +1 more source

First use of the I3S Pattern photoidentification application as a preliminary and complementary tool for tiger shark Galeocerdo cuvier idenfication

, 2022
Tiger shark Galeocerdo cuvier (Peròn & Lesueur, 1822) is an apex predator in many tropical and warm-temperate ecosystems around the world (Heithaus, 2001).
Sgambaro, Nadia, Micarelli, Primo, Magnani, Benedetta, Bekaert, Matthieu, Reinero, Francesca Romana   +4 more
core   +1 more source

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

The Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro, Marco Aurélio Gallo de França   +1 more
wiley   +1 more source

Serratolamna serrata (Agassiz) (Pisces, Neoselachii) from the Maastrichtian (Late Cretaceous) of Jamaica [PDF]

Three teeth of the shark Serratolamna serrata (Agassiz) from the Guinea Corn Formation (Central Inlier) represent the first recorded occurrence of fossil sharks within the Cretaceous of Jamaica.
Underwood, Charlie J., Mitchell, S.F.
core   +5 more sources

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source

Top predators, shared prey: isotopic niche dynamics and trophic interactions among dusky, tiger and white sharks

Endangered Species Research
Assessing the trophic relationships among sympatric marine predators is crucial for ecosystem and fisheries management. This study used carbon and nitrogen stable isotope analysis to elucidate resource use and sharing of dusky Carcharhinus obscurus ...
RS Lipscombe, V Raoult, PA Butcher
doaj   +1 more source