Dodatak:Popis mekušaca, Ar
Arc
uredi- Arca acuminata Krauss, 1848
- Arca boucardi Jousseaume, 1894
- Arca bouvieri Fischer, 1874
- Arca despecta Fischer, 1876
- Arca fernandezensis Hertlein & Strong, 1943
- Arca imbricata Bruguière, 1789
- Arca kauaia (Dall, Bartsch & Rehder, 1938)
- Arca koumaci Lutaenko & Maestrati, 2007
- Arca mutabilis (G. B. Sowerby I, 1833)
- Arca navicularis Bruguière, 1789
- Arca noae Linnaeus, 1758
- Arca ocellata Reeve, 1844
- Arca pacifica (G. B. Sowerby I, 1833)
- Arca patriarchalis Röding, 1798
- Arca reticulata Gmelin, 1791
- Arca tetragona Poli, 1795
- Arca truncata (G. B. Sowerby I, 1833)
- Arca turbatrix Oliver & Cosel, 1993
- Arca ventricosa Lamarck, 1819
- Arca volucris Reeve, 1844
- Arca zebra (Swainson, 1833)
Mollusca → Bivalvia → Arcida → Arcoidea → Arcidae
- Archaeomenia
- Archidorididae
- Archimediella
- Archiminolia
- Archiphysa
Architectonica Röding, 1798
uredi- Architectonica arcana Bieler, 1993
- Architectonica consobrina Bieler, 1993
- Architectonica grandiosa Iredale, 1931
- Architectonica gualtierii Bieler, 1993
- Architectonica karsteni Rutsch, 1934
- Architectonica laevigata (Lamarck, 1816)
- Architectonica maculata (Link, 1807)
- Architectonica maxima (Philippi, 1849)
- Architectonica modesta (Philippi, 1849)
- Architectonica nobilis Röding, 1798
- Architectonica perdix (Hinds, 1844)
- Architectonica perspectiva (Linnaeus, 1758)
- Architectonica proestleri Alf & Kreipl, 2001
- Architectonica purpurata (Hinds, 1844)
- Architectonica spinogula Laws, 1941 †
- Architectonica stellata (Philippi, 1849)
- Architectonica taylori (Hanley, 1862)
- Architectonica trochlearis (Hinds, 1844)
Mollusca → Gastropoda → Heterobranchia → Architectonicoidea → Architectonicidae
Porodi ca Architectonicidae Gray, 1850
uredi- Adelphotectonica Bieler, 1987
- Architectonica Röding, 1798
- Basisulcata Melone & Taviani, 1985
- Climacopoma Fischer, 1885 †
- Discotectonica Marwick, 1931
- Granosolarium Sacco, 1892
- Heliacus d'Orbigny, 1842
- Philippia Gray, 1847
- Pseudomalaxis P. Fischer, 1885
- Pseudotorinia Sacco, 1892
- Psilaxis Woodring, 1928
- Solatisonax Iredale, 1931
- Spirolaxis Monterosato, 1913
- Wangaloa Finlay, 1927 †
Mollusca → Gastropoda → Heterobranchia → Architectonicoidea
Natporodica Architectonicoidea Gray, 1850
uredi- Amphitomariidae Bandel, 1994 †
- Architectonicidae Gray, 1850
- Cassianaxidae Bandel, 1996 †
Mollusca → Gastropoda → Heterobranchia
- Architeuthidae
Architeuthis Steenstrup, 1857
uredi- Architeuthis dux Steenstrup, 1857
Mollusca → Cephalopoda → Decapodiformes → Oegopsida → Architeuthidae
Porodica Architeuthidae Pfeffer, 1900
uredi- Architeuthis Steenstrup, 1857
Mollusca → Cephalopoda → Coleoidea → Decapodiformes → Oegopsida
- Archivesica
- Archivolva
- Arcidae
- Arcidens confragosus T. Say, 1829
- Arcidens wheeleri (Ortmann & Walker, 1912)
Mollusca → Bivalvia → Unionoida → Unionidae
- Arcidopsis
- Arcinella
- Arcoida
- Arcoidea
- Arconaia
- Arcopagia
- Arcopella
- Arcopsis
- Arctica
- Arcticidae
- Arcticoidea
- Arctomelon
- Arcturellina
- Arcuatula
- Arcuella
- Arculus sykesii (Chaster, 1895)
Mollusca → Bivalvia → Veneroida → Galeommatoidea → Lasaeidae
Ard
uredi- Ardeadoris
Are
uredi- Arene
- Areneidae
- Arenifodiens
- Arestorides
Arg
uredi- Argalista
- Arganiella
- Argentovoluta
- Argobuccinum
- Argonauta
- Argonautidae
- Argonautoidea
- Argopecten
- Argyrodonax
- Argyropeza
Ari
uredi- Ariadnaria
- Arielia
Arm
uredi- Armiger
- Armina
- Arminidae
- Arminoidea
- Armodoris
Arn
uredi- Arnemelassa
Aro
uredi- Aroapyrgus
- Arotonaias
Arr
uredi- Arrhoges
Art
uredi- Artemidiconus
- Arthritica
Arv
uredi- Arvella