| Citation | Calder, D.R., J.T. Carlton and H.H. Choong, 2014 Clava multicornis (Forsskål, 1775): rediscovery of a North Atlantic hydroid (Cnidaria, Hydrozoa, Anthoathecata) on the Pacific coast of North America. BioInvasions Record 3(2):71-76. | 
| Ref. | 121802 Calder, D.R., J.T. Carlton and H.H. Choong, 2014 | 
| Page | 71 | 
| Named Used as Valid | Clava multicornis | 
| Locality | |
| Distribution | North Atlantic. |