World Register of Marine Species (WoRMS)
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Dall, W. H. (1873). Catalogue of the recent species of the class Brachiopoda. Proceedings of the Academy of Natural Sciences of Philadelphia. 25: 177-204.
Hatai, K. (1937). On some recent brachiopods from Eastern Shan-tung, China. Bulletin of the Biogeographical Society of Japan. 7: 317-324.