Results 101 to 110 of about 4,709 (218)

First shark from the Late Devonian (Frasnian) Gogo Formation, Western Australia sheds new light on the development of tessellated calcified cartilage.

PLoS ONE, 2015
BACKGROUND:Living gnathostomes (jawed vertebrates) comprise two divisions, Chondrichthyes (cartilaginous fishes, including euchondrichthyans with prismatic calcified cartilage, and extinct stem chondrichthyans) and Osteichthyes (bony fishes including ...
John A Long, Carole J Burrow, Michal Ginter, John G Maisey, Kate M Trinajstic, Michael I Coates, Gavin C Young, Tim J Senden   +7 more
doaj   +1 more source

Evolution of dental tissue mineralization: an analysis of the jawed vertebrate SPARC and SPARC-L families

BMC Evolutionary Biology, 2018
Background The molecular bases explaining the diversity of dental tissue mineralization across gnathostomes are still poorly understood. Odontodes, such as teeth and body denticles, are serial structures that develop through deployment of a gene ...
Sébastien Enault, David Muñoz, Paul Simion, Stéphanie Ventéo, Jean-Yves Sire, Sylvain Marcellini, Mélanie Debiais-Thibaud   +6 more
doaj   +1 more source

Erratum: Pharmacokinetic studies in elasmobranchs: Meloxicam administered at 0.5 mg/kg using intravenous, intramuscular, and oral routes to nursehound sharks (Scyliorhinus stellaris)

Frontiers in Veterinary Science, 2023
Frontiers Production Office
doaj   +1 more source

First elucidation of a blood fluke (Electrovermis zappum n. gen., n. sp.) life cycle including a chondrichthyan or bivalve

International Journal for Parasitology: Parasites and Wildlife, 2019
We describe a new fish blood fluke (Digenea: Aporocotylidae: Electrovermis zappum n. gen., n. sp.) and its life cycle in the intertidal zone adjacent to Mobile Bay (north-central Gulf of Mexico).
Micah B. Warren, Stephen A. Bullard
doaj   +1 more source

Identification of Vulnerable Species and Biological of Sharks from the Indian Ocean (SEASTAR2000) [PDF]

, 2012
March 8-9, 2011, BANGKOK, THAILANDMany species of sharks contributing to the most important shark fisheries of the world inhabit the Indian Ocean, including Indonesia waters.
DHARMDI, FAHMI, WIADNYANA, NGURAH N.
core  

Life histories of deepwater chondrichthyans

, 2015
As fisheries move into deeper waters the ability of deepwater chondrichthyans to sustain fishing is relatively unknown, although the limited information to date suggests most are inherently vulnerable to exploitation. Knowledge of deepwater chondrichthyans life history traits is required to enable effective management of deepwater chondrichthyans, as ...
openaire   +2 more sources

Oldest near-complete acanthodian: the first vertebrate from the Silurian Bertie Formation Konservat-Lagerstätte, Ontario.

PLoS ONE, 2014
BackgroundThe relationships between early jawed vertebrates have been much debated, with cladistic analyses yielding little consensus on the position (or positions) of acanthodians with respect to other groups.
Carole J Burrow, David Rudkin
doaj   +1 more source

Karksilepis parva gen. et sp. nov. (Chondrichthyes) from the Burtnieki Regional Stage, Middle Devonian of Estonia [PDF]

Estonian Journal of Earth Sciences, 2008
Dermal scales of a new chondrichthyan were discovered in four levels in sandstones of the Härma Beds (lower part of the Burtnieki Regional Stage, Middle Devonian) in the Karksi outcrop of South Estonia. The classification of Karksilepis parva gen. et sp.
Kleesment, Anne, Märs, Tiiu, Niit, Moonika   +2 more
doaj  

A Description of the New Hybodont Shark Genus, Columnaodus, from the Burlington and Keokuk Limestones (Carboniferous, Mississippian, Osagean) of Illinois and Iowa, USA

Diversity
Bonebeds occurring in exposures of the Burlington and Keokuk Limestones (Mississippian/Osagean) along the Iowa and Illinois border (USA) contain an abundant and diverse collection of chondrichthyan remains that includes teeth, spines, denticles, and ...
David Cicimurri, Charles Ciampaglio, Matthew Hoenig, Ryan Shell, Lauren Fuelling, David Peterman, Daniel A. Cline, Stephen Jacquemin   +7 more
doaj   +1 more source