Davidson, T. (1882). A Monograph of the British fossil Brachiopoda, Devonian and Silurian Supplements, vol. 5, part 1. Palaeontographical Society, Monograph. London. p. 1–134, pl. 1–7.
222450
Davidson, T.
1882
A Monograph of the British fossil Brachiopoda, Devonian and Silurian Supplements, vol. 5, part 1