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Acraspeda

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Acraspeda \A*cras"pe*da\, n. pl. [NL., fr. Gr. 'a priv. + ?
   border.] (Zo["o]l.)
   A group of acalephs, including most of the larger
   jellyfishes; the Discophora.
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