1 entry 1 source
Acrania
Open directlyWebster's 1828 Dictionary · 1828
Part of speech: noun (n.)
1. Partial or total absence of the skull.
2. The lowest group of Vertebrata, including the amphioxus, in which no skull exists.
1 entry 1 source
Part of speech: noun (n.)
1. Partial or total absence of the skull.
2. The lowest group of Vertebrata, including the amphioxus, in which no skull exists.