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[2x]
: Pâ Pæ Pè Pé Pœ P- P. P/ P< Pa Pb Pc Pd Pe Pf Ph Pi Pj Pk Pl Pm Pn Po Pp Pr Ps Pt Pu Pv Pw Px Py
proöstracum
CIDE DICTIONARY
proöstracum, n. [NL., fr. Gr. before + shell of a testacean.].
The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous. See Illust. of Phragmocone. [1913 Webster]
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