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]
Deep-Sea (2025). Theocalyptra Haeckel, 1887. Accessed at: https://marinespecies.org/DeepSea/aphia.php?p=taxdetails&id=413003 on 2025-05-22
Glover, A.G.; Higgs, N.; Horton, T. (2025). World Register of Deep-Sea species (WoRDSS). Theocalyptra Haeckel, 1887. Accessed at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=413003 on 2025-05-22
original descriptionHaeckel, 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]