World Register of Marine Species (WoRMS)
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2026). World Hydrozoa Database. Crystallophyes amygdalina Moser, 1925. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=135414 on 2026-08-31
Moser, F. (1925). Die Siphonophoren der Deutschen Südpolar-Expedition, 1901-1903. Deutsche Südpolar-Expedition 1901-1903 17 (Zoologie Band 9):. 1-541, pls 1-33.
Alvariño A., Frankwick K.R. (1983). Heteropyramis alcala and Thalassophyes ferrarii, a new species of Clausophyidae (Calycophorae: Siphonophora) from the south Pacific. Proceedings of the Biological Society of Washington. 96(4): 686-692.