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Data last updated
Mon 1 Dec 2025
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Bivalvia
| ... | Unionoidea
| Unionidae
| Parreysiinae
| Lamellidentini
| Trapezidens exolescens
nominal species Unio fragilis Nevill, 1877
Nevill, 1877. J. Asiat. Soc. Bengal 46: 39.
(homonym of Unio (Leptodea) fragilis Rafinesque, 1820)
= Trapezidens exolescens Taxonomic Opinions+ Trapezoideus exolescens (Gould, 1843) — He & Zhuang, 2013 + Trapezoideus exolescens pallegoixi (Sowerby, 1867) — Brandt, 1974 + Trapezoideus misellus (Morelet, 1865) — Haas, 1969 + Trapezoideus exolescens (Gould, 1843) — Prashad, 1922 + Trapezoideus misellus (Morelet, 1865) — Haas, 1919 + Trapezoideus foliaceus var. comptus (DeShayes & Jullien, 1874) — Preston, 1915 + Trapezoideus foliaceus var. comptus (DeShayes & Jullien, 1874) — Simpson, 1914 + Trapezoideus foliaceus var. comptus (DeShayes & Jullien, 1874) — Simpson, 1900 + Unio foliaceus Gould — Tapparone Canefri, 1889 = Unio fragilis n. sp. — Nevill, 1877
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