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Actinost vs Actinopt - What's the difference?

actinost | actinopt |

As nouns the difference between actinost and actinopt

is that actinost is (ichthyology) a bone at the base of a paired fin (of a fish) while actinopt is actinopterygian.

actinost

English

Noun

(en noun)
  • (ichthyology) A bone at the base of a paired fin (of a fish)
  • * 1889 , Dr. G. Baur, Journal of morphology, Volume 3?, On the morphology of ribs and the fate of the actinosts of the median fin in fishes [http://books.google.com/books?id=iZWF9YViz-kC]:
    • The second well-developed actinost is below the vertebra supporting the subcaudal blood-vessels, but that is not so strong proximally as the first; the ribs are not directed downwards, but backwards, and are entirely separated from each other.

    actinopt

    English

    Noun

    (en noun)
  • actinopterygian