Assertion: cephalopod's shell | /r/MadeOf | large flaps
Facets:
Source sentences:
text: The paper nautilus is usually found near the surface of tropical and subtropical seas feeding on plankton; the females differ from other members of the order Octopoda in that they can secrete a thin, unchambered, coiled shell, formed by large flaps, or membranes, on the dorsal…