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Elasmobranchii |
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Elasmobranchii [ə‚laz·mə′braŋ·kē‚ī] (vertebrate zoology) The sharks and rays, a subclass of the class Chondrichthyes distinguished by separate gill openings, amphistylic or hyostylic jaw suspension, and ampullae of Lorenzini in the head region. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The more distantly related elasmobranchs have provided unique insight into conserved functional domains of genes associated with human liver function (Ballatori and Villalobos 2002; Cai et al. Sharks' closest relatives aren't normal fish--they're rays, skates, guitarfish, and sawfish, a group known as elasmobranchs. The reports of landings, the amount of fish brought to shore, of sharks and related species, like skates and rays, together called elasmobranchs, grew from about 220,000 tons in 1947 to more than 800,000 tons in 1994, according to sketchy data collected by the U. |
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