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Placoid vs Ganoid - What's the difference?

placoid | ganoid |

As adjectives the difference between placoid and ganoid

is that placoid is platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoids while ganoid is having a smooth, shining surface, as if polished or enameled: specifically applied to those scales or plates of fishes which are generally of an angular form and composed of a bony or hard horny tissue overlaid with enamel.

As nouns the difference between placoid and ganoid

is that placoid is any fish having placoid scales, such as the sharks while ganoid is (zoology) one of the , a disused taxonomic grouping of fishes, including the bowfin, gars, and sturgeons.

placoid

English

Adjective

(head)
  • Platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoids.
  • * 1979 , Cormac McCarthy, Suttree , Random House, p.68:
  • What about the carp? He regarded the two placoid shapes with doubt.

    Noun

    (en noun)
  • Any fish having placoid scales, such as the sharks.
  • References

    *

    ganoid

    English

    Adjective

  • Having a smooth, shining surface, as if polished or enameled: specifically applied to those scales or plates of fishes which are generally of an angular form and composed of a bony or hard horny tissue overlaid with enamel.
  • Having ganoid scales or plates, as a fish; specifically, of or pertaining to the Ganoidei.
  • Noun

    (en noun)
  • (zoology) One of the , a disused taxonomic grouping of fishes, including the bowfin, gars, and sturgeons.
  • (Webster 1913)