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Extinct vs Acanthodian - What's the difference?

extinct | acanthodian |

As adjectives the difference between extinct and acanthodian

is that extinct is (dated) extinguished, no longer alight (of fire, candles etc) while acanthodian is pertaining to acanthodii.

As a noun acanthodian is

(zoology) a member of a group of extinct fish (acanthodii) that existed from the silurian to the permian periodbrown, lesley, ed the shorter oxford english dictionary 5th oxford: oxford university press, 2003.

extinct

English

Adjective

(en adjective)
  • (dated) Extinguished, no longer alight (of fire, candles etc.)
    • Poor Edward's cigarillo was already extinct .
  • No longer used; obsolete, discontinued.
  • * Luckily, such ideas about race are extinct in current sociological theory.
  • *
    • Indeed the very fact that the English spelling system
    writes in there'' as two words but ''therein'' as one word might be taken as suggest-
    ing that only the former is a productive syntactic construction in Modern
    English, the latter being a now extinct construction which has left behind a
    few fossil remnants in the form of compound words such as ''thereby     .
  • No longer in existence; having died out.
    • The dinosaurs have been extinct for millions of years.
  • (vulcanology) No longer actively erupting.
    • Most of the volcanos on this island are now extinct .

    Synonyms

    * dead

    Antonyms

    * (no longer alight) burning * (having died out) extant * active, dormant

    Related terms

    * extinction * extinctive * extinguish

    External links

    * *

    acanthodian

    English

    (Acanthodii)

    Alternative forms

    * acanthodean

    Noun

    (en noun)
  • (zoology) A member of a group of extinct fish (Acanthodii) that existed from the Silurian to the Permian period.Brown, Lesley, ed. The Shorter Oxford English Dictionary. 5th. Oxford: Oxford University Press, 2003.
  • * 2009 January 15, Martin D. Brazeau, “The braincase and jaws of a Devonian 'acanthodian' and modern gnathostome origins”, Nature Volume 457 No. 7227, doi:10.1038/nature07436:?
    • The emerging picture of acanthodian (and perhaps placoderm) paraphyly does not overturn a general consensus about gnathostome interrelationships.

    Adjective

    (-)
  • Pertaining to Acanthodii.

    • References