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(phylum Brachiopoda, class Articulata)

An order of brachiopods that have 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 Early Devonian; one became extinct at the end of the Permian, two are extant.

Subjects: Earth Sciences and Geography — Zoology and Animal Sciences.

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