A Monograph of British Graptolites. Part X. Pages 487–526; Plates L–LII
- 1 February 1914
- journal article
- research article
- Published by Taylor & Francis in Monographs of the Palaeontographical Society
- Vol. 67 (327), 487-526
- https://doi.org/10.1080/02693445.1914.12035565