Results 151 to 160 of about 8,625 (225)

Chondrichthyes

Encyclopedia of Geology, 2021
J. Maisey
openaire   +2 more sources

Ancient DNA analysis of an archaeological assemblage of Chondrichthyes vertebrae from South Auckland, New Zealand

Journal of Archaeological Science: Reports, 2021
Sharks and their relatives (Chondrichthyes) were an important food source for pre-European Māori. However, their skeletons, which are largely comprised of cartilage, are poorly preserved in the archaeological record, with only teeth and vertebrae ...
Lara Shepherd
exaly   +2 more sources

Morphology and phylogenetic significance of the pelvic articular region in elasmobranchs (Chondrichthyes)

Cladistics, 2023
The morphology of paired fins is commonly overlooked in morphological studies, particularly the pelvic girdle and fins. Consequently, previous phylogenetic studies incorporating morphological data used few skeletal characters from this complex.
J. B. D. Silva, Diego F. B. Vaz
semanticscholar   +1 more source

Levels of Total Mercury and Health Risk Assessment of Consuming Freshwater Stingrays (Chondrichthyes: Potamotrygoninae) of the Brazilian Amazon

International Journal of Environmental Research and Public Health, 2023
Mercury is an element with potential risk to fish and those who consume it. Thus, this study aimed to determine the levels of total mercury (THg), carry out a health risk assessment related to the consumption of the freshwater stingrays Potamotrygon ...
A. T. Oliveira   +7 more
semanticscholar   +1 more source

Secondary Folds Contribute Significantly to the Total Surface Area in the Olfactory Organ of Chondrichthyes

open access: yesFrontiers in Physiology, 2019
The olfactory organ of Chondrichthyes is characterized by a central support with several lamellae covered by a sensory olfactory epithelium. Although secondary folds are present on the lamellae in all the chondrichthyan species analyzed to date, their ...
Andrea Amaroli   +2 more
exaly   +2 more sources

Modelling the trophic roles of the demersal Chondrichthyes in the Northern Ionian Sea (Central Mediterranean Sea)

, 2021
The maintenance of natural capital and the stability of regulation services of marine ecosystems has proved to be linked to the conservation of key species supporting the ecosystems function.
P. Ricci   +8 more
semanticscholar   +1 more source

Sharks and rays (chondrichthyes, elasmobranchii) from the miocene sediments of Kutch, Gujarat, India: paleoenvironmental and paleobiogeographic implications

Historical Biology, 2021
We report here a diverse assemblage of sharks and batoids representing the genera Carcharhinus, Rhizoprionodon, Galeocerdo, Sphyrna, Myliobatis, Aetobatus, Dasyatis, Pastinachus, Himantura and Pristis from Tapar and Jangadia the two late and early ...
K. Sharma   +7 more
semanticscholar   +1 more source

Body forms in sharks (Chondrichthyes: Elasmobranchii) and their functional, ecological, and evolutionary implications.

Zoology, 2020
Sharks are among the oldest vertebrate lineages in which their success has been attributed to their diversity in body shape and locomotor design. In this study, we investigated the diversity of body forms in extant sharks using landmark-based geometric ...
Phillip C. Sternes, K. Shimada
semanticscholar   +1 more source

Trace metals and persistent organic pollutants contamination in batoids (Chondrichthyes: Batoidea): A systematic review.

Environmental Pollution, 2019
Batoids (Chondrichthyes: Batoidea; e.g. stingrays, skates, and guitarfish) comprise more than 55% of elasmobranch taxa and represent ecologically important predators in benthic and pelagic habitats.
M. F. Bezerra   +2 more
semanticscholar   +1 more source

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