Hilton, W. A. (1930). "A new Phoronopsis from California". Transactions of the American Microscopical Society. 49 (2): 154–159. doi:10.2307/3222308. JSTOR3222308.
Hilton, W. A. (1930). "A new Phoronopsis from California". Transactions of the American Microscopical Society. 49 (2): 154–159. doi:10.2307/3222308. JSTOR3222308.