(of)Haeckel, E. (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-76. <em>Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology.</em> 18 (part 40): i-clxxxviii <small>[188]</small>, 1-1803, pl. 1-140., available online athttp://www.19thcenturyscience.org/HMSC/HMSC-Reports/Zool-40/README.htm[details]
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS). Protocystis xiphodon (Haeckel, 1887). Accessed at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=345908 on 2026-06-13
original description(of)Haeckel, E. (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-76. <em>Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology.</em> 18 (part 40): i-clxxxviii <small>[188]</small>, 1-1803, pl. 1-140., available online athttp://www.19thcenturyscience.org/HMSC/HMSC-Reports/Zool-40/README.htm[details]
additional sourceLiu, J.Y. [Ruiyu] (ed.). (2008). [Checklist of marine biota of China seas]. <em>China Science Press.</em> 1267 pp. (look up in IMIS) [details] Available for editors
Present Inaccurate Introduced: alien Containing type locality