(ofPozziella clavisaepta Topsent, 1896)Topsent, E. (1896). Campagnes du Yacht Princesse Alice. Sur deux curieuses Espérellines des Açores. <em>Bulletin de la Société Zoologique de France.</em> 21: 147-150. page(s): 147-149 [details]
de Voogd, N.J.; Alvarez, B.; Boury-Esnault, N.; Cárdenas, P.; Díaz, M.-C.; Dohrmann, M.; Downey, R.; Goodwin, C.; Hajdu, E.; Hooper, J.N.A.; Kelly, M.; Klautau, M.; Lim, S.C.; Manconi, R.; Morrow, C.; Pinheiro, U.; Pisera, A.B.; Ríos, P.; Rützler, K.; Schönberg, C.; Turner, T.; Vacelet, J.; van Soest, R.W.M.; Xavier, J. (2025). World Porifera Database. Hamacantha clavisaepta (Topsent, 1896). Accessed through: Glover, A.G.; Higgs, N.; Horton, T. (2025) World Register of Deep-Sea species (WoRDSS) at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=241325 on 2026-07-10
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS). Hamacantha clavisaepta (Topsent, 1896). Accessed at: https://marinespecies.org/Deepsea/aphia.php?p=taxdetails&id=241325 on 2026-07-10
original description(ofPozziella clavisaepta Topsent, 1896)Topsent, E. (1896). Campagnes du Yacht Princesse Alice. Sur deux curieuses Espérellines des Açores. <em>Bulletin de la Société Zoologique de France.</em> 21: 147-150. page(s): 147-149 [details]
basis of recordTopsent, E. (1904). Spongiaires des Açores. <em>Résultats des campagnes scientifiques accomplies par le Prince Albert I. Monaco.</em> 25: 1-280, pls 1-18., available online athttps://biodiversitylibrary.org/page/40603003 page(s): 223-224 [details]
Present Inaccurate Introduced: alien Containing type locality
Unknown type MNHN DT 1067, geounit Azores Canaries Madeira [details]