elasmobranch

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elasmobranch

elasmobranch , cartilaginous fish, member of the subclass Elasmobranchii of the vertebrate class Chondrichthyes (see Chordata ). This group includes sharks , skates, and rays .

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"elasmobranch." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 22 Nov. 2009 <http://www.encyclopedia.com>.

"elasmobranch." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (November 22, 2009). http://www.encyclopedia.com/doc/1E1-elasmobr.html

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Elasmobranchii

A Dictionary of Zoology | 1999 | | Â© A Dictionary of Zoology 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

Elasmobranchii (class Chondrichthyes) A subclass of shark-like fish that have five–seven gill slits, fairly rigid fins, placoid scales, a spiracular opening behind the jaws, numerous teeth, and claspers on the ventral fins of the male. Modern elasmobranchs have a cartilaginous skeleton. Apart from modern sharks and rays, the subclass also includes many fossil species.

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MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Zoology. 1999. Encyclopedia.com. 22 Nov. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Zoology. 1999. Encyclopedia.com. (November 22, 2009). http://www.encyclopedia.com/doc/1O8-Elasmobranchii.html

MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Zoology. 1999. Retrieved November 22, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Elasmobranchii.html

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Elasmobranchii

A Dictionary of Earth Sciences | 1999 | | Â© A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

Elasmobranchii Subclass of shark-like fish. They have 5–7 gill slits, fairly rigid fins, placoid scales, a spiracular opening behind the jaws, numerous teeth, and claspers on the ventral fins of the male. Elasmobranchs have a cartilaginous skeleton and their fossil record consists mainly of teeth and fin rays. Well-known fossil genera include Cladoselache (Devonian), and Ctenacanthus (Upper Devonian to Lower Permian). See CARTILAGE; and CARTILAGINOUS FISH.

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AILSA ALLABY and MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 22 Nov. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (November 22, 2009). http://www.encyclopedia.com/doc/1O13-Elasmobranchii.html

AILSA ALLABY and MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Earth Sciences. 1999. Retrieved November 22, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Elasmobranchii.html

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Free newspaper and magazine articles

	Long-term trends in catch composition from elasmobranch derbies in Elkhorn Slough, California.(Elkhorn Slough National Estuarine Research Reserve) Magazine article from: Marine Fisheries Review; 1/1/2007
	Sustainability of elasmobranchs caught as bycatch in a tropical prawn (shrimp) trawl fishery. Magazine article from: Fishery Bulletin; 10/1/2002
	Diets of thornback ray (Raja clavata) and tope shark (Galeorhinus galeus) in the bottom longline fishery of the Azores, northeastern Atlantic. Magazine article from: Fishery Bulletin; 7/1/2003

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Related articles from newspapers, magazines, and more

	Feeding ecology of elasmobranch fishes in coastal waters of the Colombian Eastern Tropical Pacific.(Research article)(Report) Magazine article from: BMC Ecology; 9/18/2007; ; 700+ words ; ...2]; Alan Giraldo [2] Background Elasmobranch fishes are among the top predators...Despite the ecological importance of elasmobranch fishes for the marine ecosystem, resource...amount of data on the diet of different elasmobranch species has been reported to date...
	An elasmobranch assemblage from the terrestrial-marine transitional Lethbridge Coal Zone (Dinosaur Park Formation: Upper Campanian), Alberta, Canada Magazine article from: Journal of Paleontology; 5/1/1999; ; 700+ words ; ...reflects an increasing marine influence. Elasmobranch (sharks and rays) remains are the...extensive taphonomic reworking. The elasmobranch fauna collected from the Dinosaur Park...Formation. Although the presence of a rich elasmobranch fauna is described for the first time...
	Sharks, Skates, and Rays: The Biology of the Elasmobranch Fishes Magazine article from: Northeastern Naturalist; 1/1/2002; ; 449 words ; ...Skates, and Rays : The Biology of the Elasmobranch Fishes, William Hamlett (Ed.) 1999...Frank Daniels' classic reference The Elasmobranch Fishes, this book serves as a valuable...may not have the formal background in elasmobranch biology. Sixteen chapters detail each...
	Central pathways mediating oculomotor reflexes in an elasmobranch, Scyliorhinus canicula. Magazine article from: The Biological Bulletin; 10/1/2002; ; 700+ words ; ...extraocular motoneurons in the adults of elasmobranch species have uniformly demonstrated...rectus (LR) muscle is ipsilateral in elasmobranches, just as it is in all other vertebrates...frogs (16) and mammals (1). The elasmobranch developmental pattern is different...
	A novel statistical method for validating the periodicity of vertebral growth band formation in elasmobranch fishes.(Report) Magazine article from: Canadian Journal of Fisheries and Aquatic Sciences; 5/1/2009; ; 700+ words ; Introduction Elasmobranch species (sharks, skates, and...determine the age of fish. For elasmobranch fish, growth band pairs in the...authors of reports of the age of elasmobranch populations have assumed that growth...
	Long-term trends in catch composition from elasmobranch derbies in Elkhorn Slough, California.(Elkhorn Slough National Estuarine Research Reserve) Magazine article from: Marine Fisheries Review; 1/1/2007; ; 700+ words ; ...means of collecting data on estuarine elasmobranch populations. From 1951 to 1962, Herald...format. Collection of data from the elasmobranch derbies was sporadic in the late 1960...these elasmobranchs in Elkhorn Slough. Elasmobranch species composition and seasona
	Smalltooth sawfish: the USA's first endangered elasmobranch? (Marine Matters). Newspaper article from: Endangered Species Update; 5/1/2002; ; 700+ words ; ...2002, the smalltooth sawfish would become the first elasmobranch on the US Endangered Species List. Introduction...Pristiformes: Pristidae) are a group of seven species of elasmobranch that have a distinctive elongate tooth rostrum...
	First Observations of Feeding on Thresher (Alopias vulpinus) and Hammerhead (Sphyrna zygaena) Sharks by Killer Whales (Orcinus orca) Specialising on Elasmobranch Prey Magazine article from: Aquatic Mammals; 1/1/2005; ; 700+ words ; ...this population. Key Words: Killer whale, Orcinus orca, elasmobranch, thresher shark, Alopias vulpinus, smooth-hammerhead...1). I describe killer whale predation on two additional elasmobranch prey Alopias vulpinus) and smooth-hammerhead (S. zygaena...
	Sustainability of elasmobranchs caught as bycatch in a tropical prawn (shrimp) trawl fishery. Magazine article from: Fishery Bulletin; 10/1/2002; ; 700+ words ; ...prawn fishery (NPF) comprises 56 elasmobranch species (16 families). The impact...excluder devices (TEDs) in reducing elasmobranch bycatch varied greatly among species...been few evaluations of the ability of elasmobranch species to sustain population levels...
	Study findings from Florida International University broaden understanding of marine biology. Newspaper article from: Ecology, Environment & Conservation; 11/13/2009; 700+ words ; ...as well as the potential release of elasmobranch mesopredators, have led to interest...however, is an understanding of elasmobranch community structure." "Such studies...the species composition of a sandflat elasmobranch community in the relatively pristine...