(ofProtoschmidtia expansa Thiele, 1903)Thiele, J. (1903). Kieselschwämme von Ternate. II. <em>Abhandlungen herausgegeben von der Senckenbergischen naturforschenden Gesellschaft.</em> 25: 933-968, pl. XVIII.[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. Petrosia (Petrosia) expansa (Thiele, 1903). 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=166835 on 2026-08-11
Glover, A.G.; Higgs, N.; Horton, T. (2026). World Register of Deep-Sea species (WoRDSS). Petrosia (Petrosia) expansa (Thiele, 1903). Accessed at: https://marinespecies.org/Deepsea/aphia.php?p=taxdetails&id=166835 on 2026-08-11
original description(ofProtoschmidtia expansa Thiele, 1903)Thiele, J. (1903). Kieselschwämme von Ternate. II. <em>Abhandlungen herausgegeben von der Senckenbergischen naturforschenden Gesellschaft.</em> 25: 933-968, pl. XVIII.[details]
Present Inaccurate Introduced: alien Containing type locality