Traits taxon details
original description
(of ) Gregory J.W. (1931). Hydroconophora and Hydrokerion: two new genera of cretaceous Hydractinidae. <em>Annales and Magazine of Natural History.</em> 8: 475-484., available online at https://doi.org/10.1080/00222933108673426 page(s): 478, pl. 18, pl. 19 figs 1 & 5 [details] Available for editors
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