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Kaliwatan sa dawhilahila ang Bythiospeum dourdeni^[1]. Una ning gihulagway ni Georgiev ni adtong 2012.^[2] Ang Bythiospeum dourdeni sakop sa kahenera nga Bythiospeum, ug kabanay nga Moitessieriidae.^[1][3] Walay nalista nga matang nga sama niini.^[1]

1. ↑ ^{1.0 1.1 1.2} Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2019). "Species 2000 & ITIS Catalogue of Life: 2019 Annual Checklist". Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X. TaxonID: 54471509. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Georgiev, D. (2012) Two new species of stygobiotic snails from the genus Bythiospeum (Gastropoda: Hydrobiidae) from Bulgaria , i>Acta Zoologica Bulgarica, Suppl. 4: 17-20
3. ↑ MolluscaBase (2019). WoRMS Mollusca: MolluscaBase (version 2019-03-06). In: Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist (Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds.). Digital resource at www.catalogueoflife.org/annual-checklist/2019. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X.