MolluscaBase taxon details
original description
(of Physa elongatoidea Aldrich, 1887 †) Aldrich, T. H. (1887). Notes on Tertiary fossils, with descriptions of new species. <em>The Journal of the Cincinnati Society of Natural History.</em> 10(2): 78–83., available online at https://www.biodiversitylibrary.org/page/9157353
page(s): 83 [details]
basis of record
Garvie C.L. & Goedert J.L. & Janssen A.W. (2020). Paleogene and Late Cretaceous Pteropoda (Mollusca, Gastropoda, Heterobranchia) from North America. <em>Zootaxa.</em> 4782(1): 1-115., available online at https://doi.org/10.11646/zootaxa.4782.1.1
page(s): 18, pl. 1 figs o1–o6, p, q, r1–r2, pl. 2 figs b, c1–c2 [details]
additional source
Janssen, A. W.; Sessa, J. A. & Thomas, E. (2016). Pteropoda (Mollusca, Gastropoda, Thecosomata) from the Paleocene-Eocene Thermal Maximum (United States Atlantic Coastal Plain). <em>Palaeontologia Electronica.</em> 19.3.47A: 1-26., available online at http://palaeo-electronica.org/content/2016/1662-pteropoda-from-the-usa-petm [details]