Order of Brachiopoda with punctate shells, rounded hinge lines, functional pedicle, deltidial plates, and a lophophore support usually consisting of a pair of crura and a calcareous loop. The three suborders comprising the order first appeared in the Lower Devonian; the Centronellidina became extinct at the end of the Permian, the Terebratulidina and the Terebratellidina are still extant.

Terebratulida