original description(ofSpirotropis megalacme Sykes, 1906)Sykes, E. R. (1906). On the Mollusca procured during the "Porcupine" Expeditions 1869-1870. Supplemental notes, part III. <em>Proceedings of the Malacological Society of London.</em> 7: 173-190., available online athttp://biodiversitylibrary.org/page/15797635 page(s): 183, pl. 16 fig. 5 [details]
context source (MSBIAS)MEDIN. (2011). UK checklist of marine species derived from the applications Marine Recorder and UNICORN. version 1.0.[details]