MolluscaBase taxon details
original description
(of Aporrhais angulata Gabb, 1864 †) Gabb, W. M. (1864). Description of the Cretaceous fossils. <em>In: Meek, F. B. and Gabb, W. M. Geological Survey of California, Palaeontology of California.</em> 1: 55-243, pls. 9-32., available online at https://biodiversitylibrary.org/page/2062749 [details]
additional source
Stewart, R. B. (1927). Gabb's California fossil type gastropods. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 78: 287–447, pls. 20–32. [details] Available for editors [request]