Spirifera infima

Whidborne, G. F. (1892-1907). A Monograph of the Devonian Fauna of the South of England. 2. The Fauna of the Limestones of Lummaton, Wolborough, Chricombe Bridge, and Chudleigh. <em>Monograph of the Palaeontographical Society London.</em> 45(216): pp. 1-56, pls. 1-5 [Feb. 1892]; 46(221): pp. 57-88, pls. 6-10 [Nov. 1892]; 47(225): pp. 89-160, pls. 11-17 [Dec. 1893]; 49(223): pp. 161-212, pls. 18-24 [Oct. 1895]; 61(298): pp. 213-222, cover, index [1907].