Daday, E. von. (1887). Monographie der Familie der Tintinnodeen. <em>Mittheilungen aus der Zoologischen Station zu Neapel.</em> 7: 473-591 + Plates 18-21.[details]
Xu, K.; Dolan, J. (2025). World Ciliophora Database. Undella Daday, 1887. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=235764 on 2025-05-11
Marine Species Traits editorial board (2025). Marine Species Traits. Undella Daday, 1887. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=235764 on 2025-05-11
original descriptionDaday, E. von. (1887). Monographie der Familie der Tintinnodeen. <em>Mittheilungen aus der Zoologischen Station zu Neapel.</em> 7: 473-591 + Plates 18-21.[details]
basis of recordZavodnik, D; Kovacic, M. (2000). Index of marine Fauna in Rijeka Bay (Adriatic Sea, Croatia). <em>Nat. Croat.</em> 9(4): 297-379.[details]
additional sourceBalech, E. (1975). La famillia Undellidae (Protozoa, Ciliophora, Tintinnina). <em>Physis, Seccion A,.</em> 34:377-398.[details] Available for editors
Present Inaccurate Introduced: alien Containing type locality