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Polygyra thyroides var. sanctisimonis Pilsbry, 1901
synoniem
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Gepubliceerd in:Pilsbry, H. A. (1901). Polygyra thyroides sanctisimonis n. var. The Nautilus, 15(1): 8. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=349900
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Helix thyroides var. pulchella Cockerell, 1892
synoniem
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Gepubliceerd in:Cockerell, T. D. A. (1892). New varieties of American Mollusca. Journal of Conchology, 7: 39. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=349763
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Polygyra thyroides var. bucculenta (A.Gould, 1848)
synoniem
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Helix bucculenta A.Gould, 1848
synoniem
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Gepubliceerd in:Gould, A. A. (1848). New shells from the south western states collected by J. Bartlett for the late Dr. Amos Binney. Proceedings of the Boston Society of Natural History, 3: 37–41. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=349453
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Mesodon leucodon Férussac, 1821
synoniem
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Gepubliceerd in:Férussac, A. E. J. P. F. d’Audebard de. (1821). Tableaux systématiques des animaux mollusques classés en familles naturelles, dans lesquels on a établi la concordance de tous les systèmes; suivis d’un Prodrome général pour tous les mollusques ou fluviatiles, vivantes ou fossiles. Paris, 1821 Et 1822, Livraison 9: 1–24 (Quarto edition) [Folio edition: 1–32] (6–IV–1821); livr. 10: 25–48 (Quarto) [Folio: 33–56] (26–V–1821); livr. 11: 49–72 (Quarto) [Folio: 57–76] (13–VII–1821); livr. 12: 73–88 (Quarto) [Folio: 77–92] (21–IX–1821); livr. 13: 89–110 (Quart. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=293558
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Polygyra thyroidus (Say, 1817)
synoniem
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Polygyra thyroides (Say, 1817)
synoniem
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Helix thyroidus Say, 1817
synoniem
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Gepubliceerd in:Say, T. (1817). Descriptions of new species of land and fresh water shells of the United States. Journal of the Academy of Natural Sciences of Philadelphia, 1 (6): 123–126. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=334211
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Helix thyroides Say, 1817
synoniem
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Helix thyreoides
synoniem
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