original description
Agassiz, L. (1862). Contributions to the natural history of the United States of America. <em>Little Brown, Boston.</em> 4: 1-380, pls 1-19., available online at https://www.biodiversitylibrary.org/page/16068829
page(s): 339 [details]
context source (Hexacorallia)
Fautin, Daphne G. (2013). Hexacorallians of the World. (look up in IMIS) [details]
basis of record
Bouillon, J.; Boero, F. (2000). Synopsis of the families and genera of the Hydromedusae of the world, with a list of the worldwide species. <i>Thalassia Salent. 24</i>: 47-296 (look up in IMIS) [details]
redescription
Schuchert, P. (2008). The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Filifera part 3. <em>Revue suisse de Zoologie.</em> 115: 221-302.
page(s): 223 [details] 
Present
Inaccurate
Introduced: alien
Containing type locality
From editor or global species database
Hydractinia aculeata, whole colony on hermit crab
Podocoryna exigua (Haeckel, 1879)
Podocoryna exigua, medusa, ca. 1 mm, newly released but already mature (eggs on manubrium)
medusa of Podocoryna areolata, loc. Norway
Podocoryna exigua, polpyps on nassarid gastropod, cultivated therefore colour not as in nature