Assertion: cephalopod | /r/HasAspect | cuttlebone
Facets:
Source sentences:
text: These cephalopods also have a cuttlebone, a porous internal shell that used to be their outer shell.
text: It is also relevant to point out that the other cephalopods tend to have what might be called "internal" shells, for example, the "cuttlebone" found in the cuttlefish.