proostracum

Noun

Meaning

The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous. See Illust. of Phragmocone.

Source: Webster's dictionary

Derivatives

proostraca

Close letter words and terms

Proosian proosteoblastic proosteoclastogenic proot prootic proove