Phragmocone
Phrag"mo*cone\, n. [Gr. ?, ?, a fence, an inclosure + ? a cone.] (Zo["o]l.) The thin chambered shell attached to the anterior end of a belemnite. [Written also phragmacone.]| phragmocone | |
noun | |
| the thin conical chambered internal shell (either straight or curved) of a belemnite |