O'Hara, T.D. 1990. New records of Ophiuridae, Ophiacanthidae and Ophiocomidae (Echinodermata: Ophiuroidea) from south-eastern Australia. Memoirs of the Museum of Victoria 50(2): 287–305 2 figs
O'Hara, T.D. 1998. Mortensen's Pacific Expedition: Re-identification of ophiuroids (Echinodermata) from southern Australia. Steenstrupia 24: 37–50, 3 figs.
O'Hara, T.D. 1998. Systematics and biology of Macquarie Island echinoderms. Memoirs of the Museum of Victoria 57(2): 167–223, 4 figs, 5 pls
O'Loughlin 1998. A review of the holothurian family Gephyrothuriidae. pp. 493–498 in Mooi, R. & Telford, M. (eds). Echinoderms: San Francisco: Proceedings of the Ninth International Echinoderm Conference San Francisco, 5-9 August 1996. Rotterdam : A.A. Balkema xxxii 923 pp.
O'Loughlin 1998. Elasipod holothurians from the continental slope of Australia. pp. 499–504, figs 1–2 in Mooi, R. & Telford, M. (eds). Echinoderms: San Francisco: Proceedings of the Ninth International Echinoderm Conference San Francisco, 5-9 August 1996. Rotterdam : A.A. Balkema xxxii 923 pp.
O'Loughlin, P.M. 1991. Brooding and fission in shallow-water echinoderms of southern Australia. pp. 223–228 figs 1–5 in Yanagisawa, T., Yasumasu, I., Oguro, C., Suzuki, N. & Motokawa, T. (eds). Biology of Echinodermata. Rotterdam : A.A. Balkema.
O'Loughlin, P.M. 2000. A review of the cucumariid genus Psolidiella Mortensen (Echinodermata: Holothuroidea). Memoirs of the Museum of Victoria 58(1): 25-37, figs 1-4
O'Loughlin, P.M. & Alcock, N. 2000. The New Zealand Cucumariidae (Echinodermata: Holothuroidea). Memoirs of the Museum of Victoria 58(1): 1-24, figs 1-6
O'Loughlin, P.M. & O'Hara, T.D. 1990. A review of the genus Smilasterias (Echinodermata, Asteroidea), with descriptions of two new species from south-eastern Australia, one a gastric brooder, and a new species from Macquarie Island. Memoirs of the Museum of Victoria 50(2): 307–323 3 figs 1 pl.
O'Loughlin, P.M. & O'Hara, T.D. 1992. New cucumariid holothurians (Echinodermata) from southern Australia, including two brooding and one fissiparous species. Memoirs of the Museum of Victoria 53(2): 227–266 figs 1–8 pls 1–10
Ohshima, H. 1914. The Synaptidae of Japan. Annotationes Zoologicae Japonenses 8(3–4): 467–482
Ohshima, H. 1915. Report on the holothurians collected by the United States Fisheries steamer Albatross in the northwestern Pacific during the summer of 1906. Proceedings of the United States National Museum 48(2073): 213–291 pls 8–11
Oken, L. 1815. Lehrbuch der Naturgeschichte. Part 3 Zoologie pp. xxviii + 850 + xviii.
Olbers, J. & Samyn, Y. 2012? The Ophiocoma species (Ophiurida: Ophiocomidae) of South Africa with description of a juvenile O. brevipes. WIOMSA Journal of Marine Sciences 10 (2): 137-154. <!-- /* Font Definitions */ @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4; mso-font-charset:0; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 0 0 0 1 0;} @font-face {font-family:"Lucida Sans Unicode"; panose-1:2 11 6 2 3 5 4 2 2 4; mso-font-charset:89; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:513 0 0 0 4 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:none; mso-hyphenate:none; font-size:12.0pt; font-family:Tahoma; mso-ascii-font-family:"Times New Roman"; mso-fareast-font-family:"Lucida Sans Unicode"; mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:Tahoma; mso-font-kerning:.5pt; mso-ansi-language:NL; mso-fareast-language:HI;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} -->(links to pdf)