Smith, R. E. (1980). Lower Devonian (Lochkovian) biostratigraphy and brachiopod faunas, Canadian Arctic Islands. <em>Geological Survey of Canada, Bulletin.</em> 308: 1-155.[details] Available for editors
original descriptionSmith, R. E. (1980). Lower Devonian (Lochkovian) biostratigraphy and brachiopod faunas, Canadian Arctic Islands. <em>Geological Survey of Canada, Bulletin.</em> 308: 1-155.[details] Available for editors