phragmocone
noun
phrag·mo·cone
variants or less commonly phragmacone
ˈfragməˌkōn
plural -s
: the thin conical chambered internal shell of a belemnite that is either straight or curved, is produced in front into a very thin process resembling a blade or leaf, and fits behind into a deep cavity in the anterior end of the guard
phragmoconic adjective
¦⸗⸗¦känik
Word History
Etymology
phragmocone International Scientific Vocabulary phragmo- (from Greek phragmos fence, fencing in, from phrassein, phrattein to enclose, fence in) + cone; phragmacone International Scientific Vocabulary phragma- (from Greek phragma fence) + cone