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Data last updated
Mon 1 Dec 2025
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Publication Say (1819): summarypublication summary
Full CitationSay, T. 1819. Conchology. [in] W. Nicholson (ed.), American Edition of the British Encyclopedia or Dictionary of Arts and Sciences, Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge 4 (3rd ed.). 20 [unnumbered] pp. Available electronically.
Attributed Nominal Genera
Alasmodonta Say, 1819 ‘Say’ of Authors. Say, 1819. Nich. Encyc. 4: [18]. Barnes, 1823. Amer. J. Sci. 6 (1-2): 275. Say, 1825. Jour. Acad. Nat. Sci. 5(3-4): 131. Férussac, 1827. Bull. Sci. Nat. et Géol. 10: 417. Hildreth, 1828. Amer. J. Sci. 14: 289. Lea, 1829. Trans. Amer. Phil. Soc. 3 [O. 1]: 421. Menke, 1830. Syn. Method. Moll.: 106. Ferussac, 1835. Mag. Zool. 5(59-60): 25. Lea, 1836. Synopsis Fam. Naiades: 43. Schlüter, 1838. Kurzgef. Syst. Verz. Conch. Samml.: 32. Agassiz, 1852. Arch. Naturg. 18(1): 46. Adams & Adams, 1857. Gen. Rec. Moll. 2(31-32): 499. Vest, 1866. Verh. Mitth. Siebenbürg. Ver. Naturw. (17): 197. Sowerby, 1868. Conch. Icon. 16: pl. 1. (new name for Alasmidonta Say, 1818; renamed Anelasmodon Agassiz, 1846) Type species: Unio undulata Say, 1817 = Alasmidonta undulata
Attributed Nominal Species
Bruguière, 1797. Encycl. Méth. 2: pl. 248, figs. 1a-b [as Unio sp.] ?. Say, 1817. Nich. Encyc. 2: [12,] pl. 4, fig. 2. Say, 1819. Nich. Encyc. 4: [18,] pl. 4, fig. 2. Say, 1858. [in] Binney, Compl. Writings T. Say: 52. Type(s): NEOTYPE SMF_4349, N. Amerika.
Lister, 1685. Conch.: pl. 152. fig. 7. [pre-linnaean] Say, 1817. Nich. Encyc. 2: [12,] pl. 3, fig. 2. Say, 1819. Nich. Encyc. 4: [17,] pl. 3, fig. 2. Say, 1858. [in] Binney, Compl. Writings T. Say: 51. Type(s): NEOTYPE MCZ_178839 (by R.I. Johnson, 1947: 148), Schuylkill River, near Philadelphia, Pennsylvania.
Lister, 1685. Conch.: pl. 150, fig. 5.
Bruguière, 1797. Encycl. Méth. 2: pl. 249, fig. 1 [as Unio sp.]. ‘LeSueur’ Say, 1817. Nich. Encyc. 2: [11], pl. 1, fig. 8. ‘LeSueur’ Say, 1819. Nich. Encyc. 4: [16], pl. 1, fig. 8. Say, 1858. [in] Binney, Compl. Writings T. Say: 49. (homonym of Unio crassus Retzius, 1788)
Say, 1817. Nich. Encyc. 2: [13,] pl. 4, fig. 3. Say, 1819. Nich. Encyc. 4: [18,] pl. 4, fig. 3. Say, 1858. [in] Binney, Compl. Writings T. Say: 52. Type(s): NEOTYPE SMF_4310, N. Amerika.
There is 1 available nominal species
attributed to this publication (14 total).
Say, 1817. Nich. Encyc. 2: [13,] pl. 3, fig. 5. Say, 1819. Nich. Encyc. 4: [19,] pl. 3, fig. 5. Say, 1858. [in] Binney, Compl. Writings T. Say: 53-54.
Lister, 1685. Conch.: pl. 151, fig. 6. Say, 1817. Nich. Encyc. 2: [12,] pl. 4, fig. 1. Say, 1819. Nich. Encyc. 4: [18,] pl. 4, fig. 1. Say, 1858. [in] Binney, Compl. Writings T. Say: 52. Type(s): USNM_85978, Bristol, Pa.
Say, 1817. Nich. Encyc. 2: [12,] pl. 2, fig. 8. Say, 1819. Nich. Encyc. 4: [18,] pl. 2, fig. 8. Say, 1858. [in] Binney, Compl. Writings T. Say: 51. Type(s): NEOTYPE MCZ_178838 (by R.I. Johnson, 1947: 153), Schuylkill River, near Philadelphia, Pennsylvania.
Bruguière, 1797. Encycl. Méth. 2: pl. 248, fig. 5 [as Unio sp.]. Say, 1817. Nich. Encyc. 2: [12,] pl. 2, fig. 7. Say, 1819. Nich. Encyc. 4: [17,] pl. 2, fig. 7. Say, 1858. [in] Binney, Compl. Writings T. Say: 50-51. Type(s): NEOTYPE SMF_4338, N. Amerika.
Say, 1817. Nich. Encyc. 2: [12,] pl. 3, fig. 1. Say, 1819. Nich. Encyc. 4: [17,] pl. 3, fig. 1. Say, 1858. [in] Binney, Compl. Writings T. Say: 50. (renamed Unio purpurascens Lamarck, 1819)
Say, 1817. Nich. Encyc. 2: [13,] pl. 3, fig. 3. Say, 1819. Nich. Encyc. 4: [19,] pl. 3, fig. 3. Say, 1858. [in] Binney, Compl. Writings T. Say: 53.
Say, 1817. Nich. Encyc. 2: [13,] pl. 3, fig. 6. Say, 1819. Nich. Encyc. 4: [19,] pl. 3, fig. 6. Say, 1858. [in] Binney, Compl. Writings T. Say: 54.
Taxonomic OpinionsAlasmidonta marginata Say, 1819 Alasmidonta undulata (Say, 1817) Anodonta cataracta Say, 1817 = Pyganodon cataracta Anodonta marginata (Say, 1819) = Alasmidonta marginata Anodonta marginata Say, 1817 = Pyganodon cataracta Anodonta undulata Say, 1817 = Strophitus undulatus Unio alatus Say, 1817 = Potamilus alatus Unio cariosus Say, 1817 = Lampsilis cariosa + Mya radiata Gmelin, 1791 Unio crassus Say, 1817 = Ortmanniana ligamentina Unio cylindricus Say, 1817 = Theliderma cylindrica Unio nasutus Say, 1817 = Sagittunio nasutus Unio ochraceus Say, 1817 = Atlanticoncha ochracea Unio plicata Say, 1817 = Amblema plicata Unio purpureus Say, 1817 = Elliptio complanata
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