nautiloid

Any of various marine cephalopod mollusks formerly classified in the subclass Nautiloidea, including the nautiluses and numerous extinct species known only from fossils.

Nautiliform; having the characters of a nautilus: belonging to the Nautiloidea.

Resembling a nautilus: specifically applied to those foraminifers whose manychambered test resembles a nautilus-shell.

That which is nautiloid, as the test of an infusorium

Like or pertaining to the nautilus; shaped like a nautilus shell.

Resembling a nautilus.

Any mollusc or shell of the genus Nautilus or family Nautilidae.