• Definition for "ganoidei"
    • One of the subclasses of fishes. They usually…
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  • Hypernym for "ganoidei"

ganoidei definition

  • noun-plural:
    • One of the subclasses of fishes. They usually have an arterial cone and light bulb, spiral abdominal device, as well as the optic nerves united by a chiasma. Most of the types are covered with bony plates, or with ganoid scales; other people have actually cycloid scales.
    • one of several subclasses of fishes. They have an arterial cone and bulb, spiral abdominal device, and optic nerves united by a chiasma. Lots of the types tend to be covered with bony plates, or with ganoid scales; other individuals have actually cycloid scales.
  • others:
    • In Agassiz's system of category, certainly one of four instructions into which the course of fishes ended up being split.
    • ergo In Müller's system, a subclass of fishes with muscular or multivalvular aortic bulb, no-cost branchiæ, covered gill-cavity, no optic chiasm, a spiral abdominal valve (occasionally rudimentary), and in most cases fulcra on a single or higher fins.
    • In Agassiz's system of classification, certainly one of four sales into which the class of fishes was split.
    • For this reason In Müller's system, a subclass of fishes with muscular or multivalvular aortic bulb, no-cost branchiæ, covered gill-cavity, with no optic chiasm, a spiral abdominal valve (often standard), and usually fulcra on one or even more fins.
  • noun:
    • a group of mainly extinct primitive bony fishes described as armor-like bony machines
    • a team of mainly extinct primitive bony fishes characterized by armor-like bony scales
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