Lemmermann, E. (1899). Ergebnisse einer Reise nach dem Pacific. (H. Schauinsland 1896\/97). Abhandlungen herausgegeben vom Naturwissenschaftlichen zu Bremen, 16: 313-398, pls I-III.[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). Ceratium gravidum var. praeolongum Lemmermann, 1899. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=696053 on 2026-07-19
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Ceratium gravidum var. praeolongum Lemmermann, 1899. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=696053 on 2026-07-19
original descriptionLemmermann, E. (1899). Ergebnisse einer Reise nach dem Pacific. (H. Schauinsland 1896\/97). Abhandlungen herausgegeben vom Naturwissenschaftlichen zu Bremen, 16: 313-398, pls I-III.[details]
basis of recordGuiry, M.D. & Guiry, G.M. (2026). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> searched on YYYY-MM-DD., available online athttp://www.algaebase.org[details]
Present Inaccurate Introduced: alien Containing type locality