MolluscaBase taxon details
Pterotheca expansa (Emmons, 1842) †
1870956 (urn:lsid:marinespecies.org:taxname:1870956)
accepted
Species
Delthyris expansus Emmons, 1842 † · unaccepted > superseded combination
marine, brackish, fresh, terrestrial
fossil only
(of Delthyris expansus Emmons, 1842 †) Emmons, E. (1842). Geology of New-York. Part II. Comprising the survey of the second geological district. New York State Geological Survey, Albany, 429 pp., available online at https://books.google.de/books?id=oW4_AAAAcAAJ
note: Described p. 397, fig.2. [details]
note: Described p. 397, fig.2. [details]
MolluscaBase eds. (2026). MolluscaBase. Pterotheca expansa (Emmons, 1842) †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1870956 on 2026-08-31
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
original description
(of Delthyris expansus Emmons, 1842 †) Emmons, E. (1842). Geology of New-York. Part II. Comprising the survey of the second geological district. New York State Geological Survey, Albany, 429 pp., available online at https://books.google.de/books?id=oW4_AAAAcAAJ
note: Described p. 397, fig.2. [details]
basis of record Wahlman G.P. (1992). Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati Arch region. <em>United States Geological Survey Professional Paper.</em> 1066-O: 1-213., available online at https://doi.org/10.3133/pp1066o
page(s): 183-184, pl. 39, fig. 6, 7, 10-12; pl. 40, fig. 1-7 [details] Available for editors
[request]
note: Described p. 397, fig.2. [details]
basis of record Wahlman G.P. (1992). Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati Arch region. <em>United States Geological Survey Professional Paper.</em> 1066-O: 1-213., available online at https://doi.org/10.3133/pp1066o
page(s): 183-184, pl. 39, fig. 6, 7, 10-12; pl. 40, fig. 1-7 [details] Available for editors
[request]
