MolluscaBase name details
original description
(of Pseudamussium Mörch, 1853) Mörch, O. A. L. (1852-1853). <i>Catalogus conchyliorum quae reliquit D. Alphonso d'Aguirra & Gadea Comes de Yoldi, Regis Daniae Cubiculariorum Princeps, Ordinis Dannebrogici in Prima Classe & Ordinis Caroli Tertii Eques. Fasc. 1, Cephalophora</i>, 170 pp. [1852]; <i>Fasc. 2, Acephala, Annulata, Cirripedia, Echinodermata</i>, 74 [+2] pp. [1853]. Hafniae [Copenhagen]: L. Klein. , available online at http://www.biodiversitylibrary.org/bibliography/12921 [details]
basis of record
Clark, B. L. (1918). The San Lorenzo Series of middle California. A stratigraphic and palaeontologic study of the San Lorenzo Oligocene series of the general region of Mount Diablo, California. <em>University of California Publications, Bulletin of the Department of Geological Sciences.</em> 11(2): 45-234, pls. 3-24., available online at https://www.biodiversitylibrary.org/page/43342287 [details]