Traits taxon details
original description
(of ) 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): 282 [details]
basis of record
Cunha, C. M. & Salvador, R. B. (2018). Type specimens of fossil “Architectibranchia” and Cephalaspidea (Mollusca, Heterobranchia) in the Academy of Natural Sciences of Philadelphia. <em>Zoosystematics and Evolution.</em> 94(2): 505-527., available online at https://doi.org/10.3897/zse.94.27401 page(s): 506, figs 1E-F [details]
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