Traits taxon details
original description
(of ) Orbigny, A. D. d'. (1850-1852). <i>Prodrome de paléontologie stratigraphique universelle des animaux mollusques et rayonnés, faisant suite au cours élémentaire de paléontologie et de géologie stratigraphiques</i>. Paris: Masson. vol. 1 [January 1850 ("1849")]: lx + 394 pp.; vol. 2 [November 1850]: 427 pp.; vol. 3 [1852]: 196 pp. + Table alphabétique et synonymique des genres et des espèces: 189 pp; addenda, errata, Table of Contents: unpaginated., available online at http://dx.doi.org/10.5962/bhl.title.45605 page(s): vol. 2: 9 [details]
basis of record
Jacquet S.M., Brock G.A. (2016). Lower Cambrian helcionelloid macromolluscs from South Australia. <em>Gondwana Research.</em> 36: 333-358., available online at http://dx.doi.org/10.1016/j.gr.2015.06.012 page(s): 349 [details] Available for editors 
additional source
Knight, J. B. (1941). Paleozoic gastropod genotypes. <em>Geological Society of America Special Papers.</em> 31: 1-510., available online at https://doi.org/10.1130/spe32 page(s): 142, pl. 3, fig. 1 [details] Available for editors 
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