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  1. What Is A Elasmobranch And What Subclass Are They? | Earth Life

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    What is an ‘elasmobranch’? The impact of palaeontology in understanding elasmobranch phylogeny and evolution The Subclass Elasmobranchii is widely considered nowadays to be the sister group of the Subclass Holocephali, although chimaeroid fishes were originally classified as elasmobranchs along with modern sharks and rays.
    Elasmobranchii is a subclass of the Chondrichthyes or cartilaginous fish. It includes the modern sharks and the rays and skates . Fossilised shark teeth are known from the early Devonian, around 400 million years ago. During the following Carboniferous period, the sharks underwent a period of diversification, with many new forms evolving.
    Elasmobranchii is one of the two subclasses of cartilaginous fish in the class Chondrichthyes, the other being Holocephali ( chimaeras ). Members of the elasmobranchii subclass have no swim bladders, five to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins, and small placoid scales.
    Subclass Elasmobranchii (sharks and rays) Numerous teeth derived of placoid scales; 5 to 7 gill clefts; operculum absent; cloaca; upper jaw not fused with braincase; dorsal fin nonerectile; with spiracles; worldwide distribution. Subclass Holocephali (chimeras) Teeth fused to bony plates; no scales; 4 gill
  3. Elasmobranch | fish subclass | Britannica

  4. Elasmobranchii - Simple English Wikipedia, the free encyclopedia

  5. Shark genomes provide insights into elasmobranch evolution and …

  6. Elasmobranchii - What are Elasmobranchs

  7. elasmo·branch
    noun
    zoology
    1. a cartilaginous fish of a group that comprises the sharks, rays, and skates. Compare with selachian.
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  8. Elasmobranchs | Encyclopedia.com

  9. Biology and conservation of elasmobranchs: an introduction to the ...

  10. What is an ‘elasmobranch’? The impact of palaeontology in …

  11. Ecological Functions and Adaptations of the Elasmobranch