World Register of Marine Species (WoRMS)
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2026). World Hydrozoa Database. Nematocarpus ramuliferus (Allman, 1874). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=117306 on 2026-08-29
Allman, G. J. (1874). Report on the Hydroida collected during the Expeditions of H.M.S. 'Porcupine'. Transactions of the Zoological Society of London. 8(8): 469-481, pls 65-68.
Allman, G.J., 1871. A monograph of the gymnoblastic or tubularian hydroids. I. The Hydroida in general: : i-xxiv + 1-450.
Broch, H. (1903). Die von dem norwegischen Fischereidampfer "Michael Sars" in den Jahren 1900-1902 in dem Nordmeer gesammelten Hydroiden. Bergens Museum Aarbog. 9: 1-14, pls 1-4.