Traits name details
original description
Conrad, T. A. (1847). Observations on the Eocene formation and description of one hundred and five new fossils of that period from the vicinity of Vicksburg, Mississippi; with an Appendix. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 3(11): 280-299., available online at https://www.biodiversitylibrary.org/page/1659549 page(s): 295 [details]
additional source
Conrad, T. A. (1848). Observations on the Eocene formation, and descriptions of one hundred and five new fossils of that period, from the vicinity of Vicksburg, Mississippi; with an Appendix. <em>Journal of the Academy of Natural Sciences of Philadelphia, ser. 2.</em> 1(2): 111-134, pls 11-14 (August 1848)., available online at https://www.biodiversitylibrary.org/page/35780201 page(s): 125, pl. 13, fig. 23 [details]
source of synonymy
Sheldon, P. G. (1917). The Atlantic slope arcas. <em>Palaentographica Americana.</em> 1 (1): 5-101, errata, pls 1-16. [published 31 Jan. 1917]., available online at https://www.biodiversitylibrary.org/page/28432837 page(s): 13, pl. 2 figs 8-12 [details]
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