WoRMS taxon details
original description
(of Zygophylax operculata Jäderholm, 1903) Jäderholm, E. 1903. Aussereuropäische Hydroiden im schwedischen Reichsmuseum. - Arkiv for Zoologi 1: 259-312, pls 12-15., available online at https://www.biodiversitylibrary.org/page/6622275 page(s): 276, pl. 12 figs 7-8 [details]
original description
(of Zygophylax grandis Vanhöffen, 1910) Vanhöffen, E. (1910). Die Hydroiden der Deutschen Südpolar-Expedition 1901-1903. <em>Deutsche Südpolar Expedition.</em> 2(4): 269-340., available online at https://www.biodiversitylibrary.org/page/6727747 page(s): 315, fig. 33a-c [details]
context source (Deepsea)
Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS), available online at http://www.iobis.org/ [details]
basis of record
RAMS Hydrozoa checklist from Dr. Álvaro L. Peña Cantero (look up in IMIS) [details]
additional source
Vervoort, W.; Schuchert, P. & van der Land, J. (2000-2007). as a contribution to UNESCO-IOC Register of Marine Organisms. (look up in IMIS) [details]
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