Ala
- Ala
- Alachosquilla
- Alacia
- Alain
- Alainodaeus
- Alainodromia
- Alainotheres
- Alania
- Alarconia
Porodica Alavatanaidae Vonk & Schram, 2007
- Rodovi: Alavatanais, Proleptochelia
Crustacea → Malacostraca → Eumalacostraca → Peracarida → Tanaidacea → Tanaidomorpha
Alavatanais Vonk & Schram, 2007
- Alavatanais carabe Vonk & Schram, 2007
Crustacea → Malacostraca → Eumalacostraca → Peracarida → Tanaidacea → Tanaidomorpha → Alavatanaidae
Alb
Albanthura Wägele, 1985
- Albanthura rotunduropus Wägele, 1985
- Albanthura stenodactyla Wägele, 1985
Crustacea → Malacostraca → Isopoda → Cymothoida → Anthuroidea → Leptanthuridae
- Albertosphoera
- Albionella
- Alboscia
- Albunea
- Albuneidae
- Albunione
Alc
- Alcirona
†Alcmonacaris Polz 2009
- †Alcmonacaris winkleri Polz 2009
Crustacea → Malacostraca → Decapoda
- Alcockia
- Alcockianum
- Alcomon
Ale
- Alebion
- Alella
- Alepas
- Alexandrella
Ali
- Aliaporcellana
- Alicella
- Alicenula
- Aliculastrum
- Alienacanthomysis
Alima Leach, 1817
- Alima hieroglyphica (Kemp, 1911)
- Alima hildebrandi (Schmitt, 1940)
- Alima maxima Ahyong, 2002
- Alima neptuni (Linnaeus, 1768)
- Alima orientalis Manning, 1978
- Alima pacifica Ahyong, 2001
Crustacea → Malacostraca → Stomatopoda → Squilloidea → Squillidae
Alimopsis Manning, 1977
- Alimopsis supplex (Wood-Mason, 1875)
Crustacea → Malacostraca → Stomatopoda → Squilloidea → Squillidae
Alimopsoides Moosa, 1991
- Alimopsoides tuberculatus Moosa, 1991
Crustacea → Malacostraca → Stomatopoda → Squilloidea → Squillidae
- Alistratia
- Alitropus
All
- Allacanthos
- Allactaea
- Allathelges
- Allaxius
- Allicella
- Allobopyrus
- Allocrangonyctidae
- Allocrangonyx
- Allodaposia
- Allodiastylis
- Allodiplophryxus
- Alloeoleucon
- Alloeopagurodes
- Allogalathea
- Allogaussia
- Allograea
- Allokepon
- Allomelita
- Alloniscidae
- Alloniscus
- Allophryxus
- Allopontia
- Allopotamon
- Allorbimorphus
- Allorchestes
- Allorostrata
- Alloschizidium
- Allotanais
- Allotexiweckelia
Alm
- Almyracuma
Alo
- Aloiloi
- Alona
- Alonella
Potporodica Aloninae Dybowski & Grochowski, 1894 emend. Frey, 1967
- Biapertura Smirnov, 1971 [1]
- Kurzia Dybowski & Grochowski, 1894 [1]
Crustacea → Branchiopoda → Diplostraca → Cladocera → Anomopoda → Chydoridae
- Alope
- Alox
Alp
- Alpheidae
- Alpheoidea
- Alpheopsis
- Alpheus
- Alpioniscus
Alt
- Alternochelata
- Alteutha
- Alteuthoides
- Alticuma
- Altiverruca
- Altopontonia
Alv
Porodica Alvinocarididae Christoffersen, 1986
- Alvinocaridinides Komai & Chan, 2010
- Alvinocaris Williams & Chace, 1982
- Chorocaris Martin & Hessler, 1990
- Manuscaris Komai & Tsuchida, 2015
- Mirocaris Vereshchaka, 1997
- Nautilocaris Komai & Segonzac, 2004
- Opaepele Williams & Dobbs, 1995
- Rimicaris Williams & Rona, 1986
- Shinkaicaris Komai & Segonzac, 2005
Crustacea → Malacostraca → Decapoda → Pleocyemata → Caridea → Bresilioidea
Alvinocaridinides Komai & Chan, 2010
- Alvinocaridinides formosa Komai & Chan, 2010
- Alvinocaridinides semidentatus Komai, Menot & Segonzac, 2016
Crustacea → Malacostraca → Decapoda → Caridea → Bresilioidea → Alvinocarididae
Alvinocaris Williams & Chace, 1982
- Alvinocaris alexander Ahyong, 2009
- Alvinocaris brevitelsonis Kikuchi & Hashimoto, 2000
- Alvinocaris chelys Komai & Chan, 2010
- Alvinocaris dissimilis Komai & Segonzac, 2005
- Alvinocaris komaii Zelnio & Hourdez, 2009
- Alvinocaris longirostris Kikuchi & Ohta, 1995
- Alvinocaris lusca Williams & Chace, 1982
- Alvinocaris markensis Williams, 1988
- Alvinocaris methanophila Komai, Shank & Van Dover, 2005
- Alvinocaris muricola Williams, 1988
- Alvinocaris niwa Webber, 2004
- Alvinocaris solitaire Yahagi, Watanabe, Kojima & Beedesse, 2014
- Alvinocaris stactophila Williams, 1988
- Alvinocaris williamsi Shank & Martin, 2003
Crustacea → Malacostraca → Decapoda → Caridea → Bresilioidea → Alvinocarididae