| phragmocone | (n) the thin conical chambered internal shell (either straight or curved) of a belemnite, Syn. phragmacone |
| Phragmocone | n. [ Gr. &unr_;, &unr_;, a fence, an inclosure + &unr_; a cone. ] (Zool.) The thin chambered shell attached to the anterior end of a belemnite. |