Author: Raymond, P.E., 1911.:
Title: The Brachiopoda and Ostracoda of the Chazy.
Description: Ann. Carnegie Mus., 7(2): pp. 215-259, 115 figs. on 4 plates, 17 figs. in text. Extract, plain new wrappers. Last text page in photocopy. - Middle Ordovician.

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