plectospondyli definition

  • noun-plural:
    • a thorough suborder of fresh-water physostomous fishes obtaining the anterior vertebræ united and much customized; the Eventognathi.
  • others:
    • An order of fishes having a precoracoid arch, a symplectic but no coronoid bones, therefore the anterior vertebræ coössified and associated with the auditory apparatus by a chain of small bones. It contains the cyprinids, characinids, and gymnonotous fishes—all of fresh water.
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