MolluscaBase name details
Trigonia quadrata Agassiz, 1840 †
853518 (urn:lsid:marinespecies.org:taxname:853518)
unaccepted > junior homonym (junior homonym of Trigonia quadrata J. de C. Sowerby, 1836; replaced by T. deslongchampsi Munier-Chalmas, 1865)
Species
marine, brackish, fresh, terrestrial
fossil only
Agassiz, L. (1840). Études critiques sur les mollusques fossiles; Mémoire sur les Trigonies. Neuchâtel, Petitpierre, 1-58.
page(s): 27, pl. 6, figs 7-9 [details]
page(s): 27, pl. 6, figs 7-9 [details]
Type locality contained in France
type locality contained in France [details]
Nomenclature Cooper (2020) treated Trigonia deslongchampsii Munier-Chalmas, 1865, as a nomen oblitum and T. quadrata Agassiz, 1840, as a...
Nomenclature Cooper (2020) treated Trigonia deslongchampsii Munier-Chalmas, 1865, as a nomen oblitum and T. quadrata Agassiz, 1840, as a valid name, but the conditions of reversal of precedence (ICZN Art. 23.9) are not met, and T. quadrata Agassiz, 1840, is permanently invalid. [details]
MolluscaBase eds. (2025). MolluscaBase. Trigonia quadrata Agassiz, 1840 †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=853518 on 2025-04-29
Date
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original description
Agassiz, L. (1840). Études critiques sur les mollusques fossiles; Mémoire sur les Trigonies. Neuchâtel, Petitpierre, 1-58.
page(s): 27, pl. 6, figs 7-9 [details]
basis of record Cooper, M. R. (2020). On the Quadratotrigoniinae (Trigoniida: Myophorelloidea), their palaeobiogeography, evolution and classification. <em>Durban Natural Science Museum Novitates.</em> 39, 1-48. [details] Available for editors
[request]
page(s): 27, pl. 6, figs 7-9 [details]
basis of record Cooper, M. R. (2020). On the Quadratotrigoniinae (Trigoniida: Myophorelloidea), their palaeobiogeography, evolution and classification. <em>Durban Natural Science Museum Novitates.</em> 39, 1-48. [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Nomenclature Cooper (2020) treated Trigonia deslongchampsii Munier-Chalmas, 1865, as a nomen oblitum and T. quadrata Agassiz, 1840, as a valid name, but the conditions of reversal of precedence (ICZN Art. 23.9) are not met, and T. quadrata Agassiz, 1840, is permanently invalid. [details]
