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elasmobranch
(redirected from Elasmobranchs)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.02 sec.
elasmobranch (ĭlăs`məbrăngk), cartilaginous fish, member of the subclass Elasmobranchii of the vertebrate class Chondrichthyes (see Chordata Chordata (kôrdā`tə,–dä`–)
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). This group includes sharks shark, member of a group of almost exclusively marine and predaceous fishes. There are about 250 species of sharks, ranging from the 2-ft (60-cm) pygmy shark to 50-ft (15-m) giants. They are found in all seas, but are most abundant in warm waters.
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, skates, and rays ray, extremely flat-bodied cartilaginous marine fish , related to the shark . The pectoral fins of most rays are developed into broad, flat, winglike appendages, attached all along the sides of the head; the animal swims by rippling movements of these wings.
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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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