Here you will find one or more explanations in English for the word Dipterygian.
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Dipterygian
Dipterygian Dip`ter*yg"i*an, a. [Gr. di- = di`s- twice + ? a
fin, dim. of ? wing.] (Zo["o]l.)
Having two dorsal fins; -- said of certain fishes.
Meaning of Dipterygian from wikipedia
