Traits name details
original description
Bridge, J. & Cloud D. E. (1947). New gastropods and trilobites critical in the correlation of Lower Ordovician rocks. <em>American Journal of Science.</em> 245(9): 545-559., available online at https://ajsonline.org/article/61174.pdf page(s): 550 [details]
source of synonymy
Wagner, P. J. (2002). Phylogenetic relationships of the earliest anisostrophically coiled gastropods. <em>Smithsonian Contributions to Paleobiology.</em> 88: 152 pp., available online at https://www.biodiversitylibrary.org/page/58078617 page(s): 70 [details]
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