Kent, W.S. (1880-1881). A manual of the infusoria, including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign and an account of the organization and affinities of the sponges. Vol. I pp. 289-720. London., available online athttps://archive.org/details/manualofinfusori18081kent[details]
Guiry, M.D. & Guiry, G.M. (2025). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Ancyromonas sigmoides Kent, 1881. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: http://www.marbef.org//www.marbef.org/data/aphia.php?p=taxdetails&id=118040 on 2025-05-13
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025). European Register of Marine Species. Ancyromonas sigmoides Kent, 1881. Accessed at: https://marbef.org/data/aphia.php?p=taxdetails&id=118040 on 2025-05-13
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original descriptionKent, W.S. (1880-1881). A manual of the infusoria, including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign and an account of the organization and affinities of the sponges. Vol. I pp. 289-720. London., available online athttps://archive.org/details/manualofinfusori18081kent[details]
basis of recordGuiry, M.D. & Guiry, G.M. (2025). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. searched on YYYY-MM-DD., available online athttp://www.algaebase.org[details]
basis of recordBrandt, S. (2001). Protista incertae sedis (heterotrophic species), in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 79 (look up in RoR) [details]
additional sourceGuiry, M.D. & Guiry, G.M. (2025). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. searched on YYYY-MM-DD., available online athttp://www.algaebase.org[details]
Present 