| Abyssoanthidae Reimer & Fujiwara, 2007 | | Allen, Chris | |
| 'Scaly foot gastropod' | | Allen, Chris | en |
| Abyssoanthus nankaiensis Reimer & Fujiwara, 2007 | | Allen, Chris | en |
| Abyssoanthus Reimer & Fujiwara, 2007 | | Allen, Chris | |
| Abyssocladia dominalba Vacelet, 2006 | | Allen, Chris | en |
| Abyssocladia Lévi, 1964 | | Allen, Chris | |
| Abyssocladia naudur Vacelet, 2006 | | Allen, Chris | en |
| Abyssogena novacula Krylova, Sahling & Janssen, 2010 | | Allen, Chris | en |
| Abyssogena phaseoliformis (Metivier, Okutani & Ohta, 1986) | | Allen, Chris | en |
| Abyssogena southwardae Krylova, Sahling & Janssen, 2010 | | Allen, Chris | en |
| Abyssotherma pacifica Bronnimann, van Dover & Whittaker 1989 | | Allen, Chris | en |
| Acesta bullisi (H. E. Vokes, 1963) | | Allen, Chris | en |
| Acesta excavata (Fabricius, 1779) | | Allen, Chris | en |
| Acesta H. Adams & A. Adams, 1858 | | Allen, Chris | en |
| Acesta oophaga Järnegen, Schandler, Sneli, Ronningen & Young, 2007 | | Allen, Chris | en |
| Acharax alinae Metivier & Cosel 1993 | | Allen, Chris | en |
| Actinostola Verrill, 1883 | | Allen, Chris | en |
| Akebiconcha kawamurai Kuroda, 1943 | | Allen, Chris | en |
| Alaysia spiralis Southward, 1991 | | Allen, Chris | en |
| Allograea tomentosa Guinot, Hurtado & Vrijenhoek, 2002 | | Allen, Chris | en |
| Alvania stenolopha Bouchet & Warén, 1993 | | Allen, Chris | en |
| Alvinactis chessi Zelnio, Rodriguez & Daly, 2009 | | Allen, Chris | en |
| Alvinella caudata Desbruyères & Laubier, 1986 | | Allen, Chris | en |
| Alvinella pompejana Desbruyères & Laubier, 1980 | | Allen, Chris | en |
| Alviniconcha hessleri Okutani & Ohta, 1988 | | Allen, Chris | en |
| Alvinocaridinides formosa Komai & Chan, 2010 | | Allen, Chris | en |
| Alvinocaridinides Komai & Chan, 2010 | | Allen, Chris | |
| Alvinocaris alexander Ahyong, 2009 | | Allen, Chris | en |
| Alvinocaris brevitelsonis Kikuchi & Hashimoto, 2000 | | Allen, Chris | en |
| Alvinocaris chelys Komai & Chan, 2010 | | Allen, Chris | en |
| Alvinocaris dissimilis Komai & Segonzac, 2005 | | Allen, Chris | en |
| Alvinocaris komaii Zelnio & Hourdez, 2009 | | Allen, Chris | en |
| Alvinocaris longirostris Kikuchi & Ohta, 1995 | | Allen, Chris | en |
| Alvinocaris lusca Williams & Chace, 1982 | | Allen, Chris | en |
| Alvinocaris markensis Williams, 1988 | | Allen, Chris | en |
| Alvinocaris methanophila Komai, Shank & Van Dover, 2005 | | Allen, Chris | en |
| Alvinocaris muricola Williams, 1988 | | Allen, Chris | en |
| Alvinocaris niwa Webber, 2004 | | Allen, Chris | en |
| Alvinocaris stactophila Williams, 1988 | | Allen, Chris | en |
| Alvinocaris Williams & Chace, 1982 | | Allen, Chris | |
| Alvinocaris williamsi Shank & Martin, 2003 | | Allen, Chris | en |
| Amathys lutzi Desbruyères & Laubier, 1996 | | Allen, Chris | en |
| Ambilimbus arcuscelestis Ivanenko, Defaye & Huys, 2005 | | Allen, Chris | en |
| Ammothea verenae Child, 1987 | | Allen, Chris | en |
| Ampelisca romigi J.L. Barnard, 1954 | | Allen, Chris | en |
| Amphiduropsis axialensis (Blake & Hilbig, 1990) | | Allen, Chris | en |
| Amphisamytha galapagensis Zottoli, 1983 | | Allen, Chris | en |
| Andromastax cephaloceratus Lee W. & Huys, 2000 | | Allen, Chris | en |
| Anthosactis pearseae Daly & Gusmao, 2007 | | Allen, Chris | en |
| Antonbruunia gerdesi Quiroga & Sellanes, 2009 | | Allen, Chris | en |
