What is a large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustration in Appendix called?
cephalata — A large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustration in Appendix. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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