Testicardines

Tes`ti`car´di`nes

n. pl.

1.

(Zool.) A division of brachiopods including those which have a calcareous shell furnished with a hinge and hinge teeth. Terebratula and Spirifer are examples.

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.