Terebratella occidentalis obsoleta

Dall W.H. (1920). Annotated list of the Recent Brachiopoda in the collection of the United States National Museum, with descriptions of thirty-three new forms. <em>Proceedings of the United States National Museum.</em> 57(2314), 261-377.

Dall, W. H. (1891). On some new or interesting west American shells obtained from the dredgings of the U.S. Fish Commission steamer Albatross in 1888, and from other sources. <em>Proceedings of the US National Museum.</em> 14: 173-191, pls 5-7.