1.phragmacone - the thin conical chambered internal shell (either straight or curved) of a belemnitephragmoconeshell - the hard largely calcareous covering of a mollusc or a brachiopod
phragmacone
enUK
phragmacone
[′frag·mə‚kōn] (invertebrate zoology) phragmocone
phragmacone
enUK
noun
Synonyms for phragmacone
noun the thin conical chambered internal shell (either straight or curved) of a belemnite