nautiloid

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Related to Nautiloidea: Nautiloids

nautiloid

any mollusc of the subclass Nautiloidea, a group of cephalopods related to the fossil ammonites, which produce a large spiral chambered shell, in the last chamber of which the animal lives.
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References in periodicals archive ?
The old cephalopods are virtually extinct, their last and only living representative being the shell-bearing Nautilus (Nautiloidea).
The seafaring mollusk known as nautilus (Cephalopoda Nautiloidea, or 'head-foot sailor') carried a calcified rendering of a mathematical wonder for its shell millions of years before Descartes anointed it with the first of its many names.
Phylogeny of the Nautiloidea. Palaeontologia Polonica, 45, 1-219.