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. 10 Jul. 2009 <http://www.encyclopedia.com>.

"elasmobranch." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (July 10, 2009). http://www.encyclopedia.com/doc/1E1-elasmobr.html

"elasmobranch." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved July 10, 2009 from Encyclopedia.com: 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. 10 Jul. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Zoology. 1999. Encyclopedia.com. (July 10, 2009). http://www.encyclopedia.com/doc/1O8-Elasmobranchii.html

MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Zoology. 1999. Retrieved July 10, 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. 10 Jul. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (July 10, 2009). http://www.encyclopedia.com/doc/1O13-Elasmobranchii.html

AILSA ALLABY and MICHAEL ALLABY. "Elasmobranchii." A Dictionary of Earth Sciences. 1999. Retrieved July 10, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Elasmobranchii.html

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Free newspaper and magazine articles

	Elasmobranch landings for the Portuguese commercial fishery from 1986 to 2001. Magazine article from: Marine Fisheries Review; 1/1/2003
	Smalltooth sawfish: the USA's first endangered elasmobranch? (Marine Matters). Newspaper article from: Endangered Species Update; 5/1/2002
	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

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Related articles from newspapers, magazines, and more

	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 ; ...spring-early summer angling derby for elasmobranchs in Elkhorn Slough. The PVRGC was soon...angling derbies, an archery derby for elasmobranchs in Elkhorn Slough was initiated in...it took only a small traction of the elasmobranchs that were caught in the angling derbies... Read more
	Elasmobranch landings for the Portuguese commercial fishery from 1986 to 2001. Magazine article from: Marine Fisheries Review; 1/1/2003; ; 700+ words ; ...Historically, fisheries have targeted elasmobranchs to supply the liver-oil or squalene...Holts, 1988; Last and Stevens, 1994). Elasmobranchs have also been landed, and in many...Stevens, 1992). More recently, however, elasmobranchs have been targeted specifically to... Read more
	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 Saw...Pristiformes: Pristidae) are a group of seven species of elasmobranch that have a distinctive elongate tooth rostrum (normally... Read more
	Sustainability of elasmobranchs caught as bycatch in a tropical prawn (shrimp) trawl fishery. Magazine article from: Fishery Bulletin; 10/1/2002; ; 700+ words ; ...northern prawn fishery (NPF) comprises 56 elasmobranch species (16 families). The impact of...rates and the within-net survival of elasmobranchs. Carcharhinus tilstoni, C. dussumieri...net. The relative sustainability of elasmobranchs caught as bycatch was examined by ranking... Read more
	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; ; 700+ words ; ...clavata) are the two most captured elasmobranch species by the Azorean bottom longline...is a shallow water bottom-living elasmobranch found in the Atlantic from Iceland...in the northeastern Atlantic Ocean. Elasmobranchs are among the top predators in marine... Read more
	Preliminary study on the use of neural arches in the age determination of bluntnose sixgill sharks (Hexanchus griseus). Magazine article from: Fishery Bulletin; 10/1/2002; ; 700+ words ; ...otoliths, scales) cannot be used for elasmobranchs in which these structures are cartilaginous...used for age estimation in a number of elasmobranch species such as the tiger shark (Galeocerdo...examining vertebral bands in these elasmobranchs. Unfortunately, the vertebral centra... Read more
	Reproductive Biology and Phylogeny of Chondrichthyes: Sharks, Batoids and Chimaeras.(Brief Article)(Book Review) Magazine article from: SciTech Book News; 3/1/2006; 133 words ; ...include phylogenetic relationships among the major lineages of modern Elasmobranchs, reproductive evolution of chondrichthyans, reproduction in fisheries science, the Elasmobranch ovary, the testis and spermatogenesis, and alkaline glands and... Read more
	Age-validation of a leopard shark (Triakis semifasciata) recaptured after 20 years. Magazine article from: Fishery Bulletin; 1/1/2003; ; 700+ words ; ...age classes up to its estimated average maximum age, and provides an example of the persistence of the OTC time mark in an elasmobranch at liberty for almost 20 years. The recaptured leopard shark made in 2001 also provides valuable information on long-term... Read more
	Growth rates of juvenile dusky sharks, Carcharhinus obscurus (Lesueur, 1818), from southwestern Australia estimated from tag-recapture data.(Statistical Data Included) Magazine article from: Fishery Bulletin; 10/1/2000; ; 700+ words ; ...has been used in studies examining elasmobranch growth. For example, Thorson and Lacy...Bertalanffy growth function. Species of elasmobranchs for which these types of techniques...analysis have not been widely used in elasmobranch studies to date. However, Francis and... Read more
	Saving sharks in Baja California?(Center for Shark Research) Magazine article from: E; 9/1/2006; ; 455 words ; ...skates and rays (a class known as elasmobranches) are being harvested via small-scale...000 to 5,500 active pangas targeting elasmobranches. The result: 20 million sharks and...started educational workshops that cover elasmobranch biology and management issues, and... Read more