World Register of Marine Species (WoRMS)
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2026). World Hydrozoa Database. Pennaria Goldfuss, 1820. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=117190 on 2026-08-01
Goldfuss, G.A. (1820). Handbuch der Zoologie. In: Schubert, G.H. (ed.). Handbuch der Naturgeschichte, zum Gebrauch bei Vorlesungen. Erste Abteilung 1-696, pls. 1-2; Zweite Abteilung: i-xxiv, 1-510, pls. 3-4.
Allman, G. J. 1872. A monograph of the gymnoblastic or tubularian hydroids. Conclusion of Part I, and Part II, containing descriptions of the genera and species of Gymnoblastea. Ray Society, London, pp. 155-450, plates 1-23.
Ayres, W. O. 1854. [... description of a new species of polyp from Long Island, allied to Tubularia, under the name Globiceps tiarella Ayres]. Proceedings of the Boston Society of Natural History 4: 193-196.
Leidy, J. (1855). Contributions towards a knowledge of the marine Invertebrate fauna of the coasts of Rhode Island and New Jersey. Journal of the Academy of Natural Sciences of Philadelphia. 3(2) no. 11: 135-152, pls. 10-11. (xii-1855).