MolluscaBase taxon details
Geloina trapezoidalis (Dufour, 1881) †
1821431 (urn:lsid:marinespecies.org:taxname:1821431)
accepted
Species
Cyrena trapezoidalis Dufour, 1881 † · unaccepted > superseded combination
Cyrena triangularis Dufour, 1881 † · unaccepted > junior homonym (of Cyrena triangularis Metcalfe,...)
of Cyrena triangularis Metcalfe, 1852
Geloina triangularis (Dufour, 1881) † · unaccepted > junior homonym (of Cyrena triangularis Metcalfe,...)
of Cyrena triangularis Metcalfe, 1852
Isodoma triangularis (Dufour, 1881) † · unaccepted > junior homonym (of Cyrena triangularis Metcalfe,...)
of Cyrena triangularis Metcalfe, 1852
Polymesoda (Isodoma) triangularis (Dufour, 1881) † · unaccepted > junior homonym (of Cyrena triangularis Metcalfe,...)
of Cyrena triangularis Metcalfe, 1852
marine
fossil only
(of Cyrena trapezoidalis Dufour, 1881 †) Dufour E. (1881). Etude des fossiles des sables éocènes de la Loire-Inférieure. Ire partie - Coquilles bivalves. <em>Annales de la Société Académique de Nantes.</em> ser. 6, 2: 13-56., available online at http://gallica.bnf.fr/ark:/12148/bpt6k2073970/f11.image
page(s): 28 [details]
page(s): 28 [details]
Type locality contained in France
type locality contained in France [from synonym] [view taxon] [details]
MolluscaBase eds. (2025). MolluscaBase. Geloina trapezoidalis (Dufour, 1881) †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1821431 on 2025-09-11
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original description
(of Cyrena triangularis Dufour, 1881 †) Dufour E. (1881). Etude des fossiles des sables éocènes de la Loire-Inférieure. Ire partie - Coquilles bivalves. <em>Annales de la Société Académique de Nantes.</em> ser. 6, 2: 13-56., available online at http://gallica.bnf.fr/ark:/12148/bpt6k2073970/f11.image
page(s): 27 [details]
original description (of Cyrena trapezoidalis Dufour, 1881 †) Dufour E. (1881). Etude des fossiles des sables éocènes de la Loire-Inférieure. Ire partie - Coquilles bivalves. <em>Annales de la Société Académique de Nantes.</em> ser. 6, 2: 13-56., available online at http://gallica.bnf.fr/ark:/12148/bpt6k2073970/f11.image
page(s): 28 [details]
page(s): 27 [details]
original description (of Cyrena trapezoidalis Dufour, 1881 †) Dufour E. (1881). Etude des fossiles des sables éocènes de la Loire-Inférieure. Ire partie - Coquilles bivalves. <em>Annales de la Société Académique de Nantes.</em> ser. 6, 2: 13-56., available online at http://gallica.bnf.fr/ark:/12148/bpt6k2073970/f11.image
page(s): 28 [details]
Present Inaccurate Introduced: alien Containing type locality
