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Thesaurus: acrania

Partial or total absence of the skull.

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  1. n. Partial or total absence of the skull.
  2. n. The lowest group of Vertebrata, including the amphioxus, in which no skull exists.
  3. 1. (Physiol.) Partial or total absence of the skull. 2. pl. (Zoöl.) The lowest group of Vertebrata, including the amphioxus, in which no skull exists.
  4. n. Partial or total absence of the skull. n. The lowest group of Vertebrata, including the amphioxus, in which no skull exists.