Definition of Proostraca. Meaning of Proostraca. Synonyms of Proostraca

Here you will find one or more explanations in English for the word Proostraca. Also in the bottom left of the page several parts of wikipedia pages related to the word Proostraca and, of course, Proostraca synonyms and on the right images related to the word Proostraca.

Definition of Proostraca

Proostracum Pro*["o]s"tra*cum, n.; pl. Pro["o]straca. [NL., fr. Gr. ? before + ? shell of a testacean.] (Zo["o]l.) The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous. See Illust. of Phragmocone.

Meaning of Proostraca from wikipedia

- based on the aragonitic constitution of the rostra, the shape of the proostraca, protoconchs, and the arm crowns, among other morphological factors. Belemnotheutis...