Between brackets is the number of accepted species

Click on "-" to collapse/hide all child taxa
Shows the number of accepted species within the taxon
The last expanded taxon is highlighted
Click on "+" to expand/show all child taxa
Click to see the taxon details page
- Mollusca (132 791)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 009)
- Subclass Autobranchia (23 295)
- Subclass Bivalvia incertae sedis (7)
- Subclass Palaeotaxodonta accepted as Nuculida
- Subclass Paleoheterodonta accepted as Palaeoheterodonta
- Subclass Protobranchia (1 365)
- Order Afghanodesmatida † (17)
- Order Manzanellida (40)
- Order Nuculanida (856)
- Superfamily Nuculanoidea H. Adams & A. Adams, 1858 (1854) (841)
- Family Adranidae Scarlato & Starobogatov, 1979 accepted as Nuculanidae H. Adams & A. Adams, 1858 (1854)
- Family Bathyspinulidae Coan & Valentich-Scott, 1997 (19)
- Family Cadomiidae Scarlato & Starobogatov, 1979 † (2)
- Family Cucullellidae P. Fischer, 1886 † (9)
- Family Glomidae A. E. Verrill & K. J. Bush, 1897 accepted as Pristiglomidae H. L. Sanders & J. A. Allen, 1973
- Family Isoarcidae Keen, 1969 † (6)
- Family Lametilidae J. A. Allen & H. L. Sanders, 1973 (2)
- Family Ledidae Gray, 1854 accepted as Nuculanidae H. Adams & A. Adams, 1858 (1854)
- Family Malletidae H. Adams & A. Adams, 1858 accepted as Malletiidae H. Adams & A. Adams, 1858 (1846)
- Family Malletiidae H. Adams & A. Adams, 1858 (1846) (155)
- Genus Adranaria Munier-Chalmas, 1876 † (1)
- Genus Australoneilo Zinsmeister, 1984 † accepted as Neilo A. Adams, 1854
- Genus Bathymalletia Kuroda & Habe, 1971 accepted as Malletia Desmoulins, 1832
- Genus Bicrenula H. S. Williams & Breger, 1916 † (1)
- Genus Caesariella Liljedahl, 1984 † (1)
- Genus Carinineilo Kuroda & T. Habe, 1971 (2)
- Genus Cleidophorus J. Hall, 1847 † accepted as Nuculites Conrad, 1841 †
- Genus Clencharia A. H. Clarke, 1961 (2)
- Genus Clidophorus [sic] accepted as Cleidophorus J. Hall, 1847 †
- Genus Concavoleda T. M. Sánchez, 1999 † (1)
- Genus Ctenoconcha Gray, 1840 accepted as Malletia Desmoulins, 1832
- Genus Dysodonta Mansuy, 1913 † (6)
- Genus Inaequidens Pojeta & Gilbert-Tomlinson, 1977 † (2)
- Genus Johnmartinia Pojeta & Gilbert-Tomlinson, 1977 † (2)
- Genus Katadesmia Dall, 1908 (7)
- Genus Koenenia Beushausen, 1884 † (1)
- Genus Lophoconcha Pojeta & Gilbert-Tomlinson, 1977 † (1)
- Genus Malletia Desmoulins, 1832 (43)
- Genus Malletiella T. Soot-Ryen, 1957 accepted as Malletia Desmoulins, 1832
- Genus Mesosaccella Chavan, 1947 † (6)
- Genus Metapalaeoneilo Lamcke, 1934 † (1)
- Genus Minormalletia Dall, 1908 accepted as Malletia Desmoulins, 1832
- Genus Myoplusia Neumayr, 1884 † (3)
- Genus Neilo A. Adams, 1854 (25)
- Genus Neiloides Freneix, 1980 † (1)
- Genus Palaeaneilo J. Hall & Whitfield, 1869 † accepted as Palaeoneilo J. Hall & Whitfield, 1869 †
- Genus Palaeoneilo J. Hall & Whitfield, 1869 † (29)
- Genus Palaeostraba Liljedahl, 1984 † (1)
- Genus Phaenodesmia Bittner, 1895 †
- Genus Praearca Neumayr, 1891 † (2)
- Genus Prosoleptus Beushausen, 1895 † (1)
- Genus Protonucula Cotton, 1930 (1)
- Genus Pseudoglomus Dall, 1898 (3)
- Genus Pseudomalletia P. Fischer, 1886 accepted as Malletia Desmoulins, 1832
- Species Pseudomalletia aoteana (B. A. Marshall, 1978) accepted as Malletia aoteana (B. A. Marshall, 1978)
- Species Pseudomalletia obtusa (G. O. Sars, 1872) accepted as Malletia pianii (van Aartsen & Giannuzzi-Savelli, 1991)
- Species Pseudomalletia pianii van Aartsen & Giannuzzi-Savelli, 1991 accepted as Malletia pianii (van Aartsen & Giannuzzi-Savelli, 1991)
- Species Pseudomalletia taliensis T. C. Lan & Y.-C. Lee, 2001 accepted as Malletia encrypta Prashad, 1932
- Genus Sinovenustas Grant-Mackie & X.-C. Li, 1997 †
- Genus Sluha Barrande, 1881 † (1)
- Genus Solenella G. B. Sowerby I, 1833 accepted as Malletia Desmoulins, 1832
- Genus Spineilo H. J. Finlay & Marwick, 1937 † (1)
- Genus Sthenodonta Pojeta & Gilbert-Tomlinson, 1977 † (4)
- Genus Suria T. M. Sánchez, 1997 † (1)
- Genus Taimyrodon Sanin, 1973 † (1)
- Genus Taiwannuculana Okutani & Lan, 1999 (2)
- Genus Venustas X.-C. Li & Grant-Mackie, 1994 † accepted as Sinovenustas Grant-Mackie & X.-C. Li, 1997 †
- Genus Yoldioides X.-C. Li & Grant-Mackie, 1994 † (1)
- Genus Zeehania Pojeta & Gilbert-Tomlinson, 1977 † (1)
- Family Neilonellidae Schileyko, 1989 (53)
- Family Nuculanidae H. Adams & A. Adams, 1858 (1854) (361)
- Family Phaseolidae Scarlato & Starobogatov, 1971 (2)
- Family Polidevciidae Kumpera, Prantl & Růžička, 1960 † (6)
- Family Poroledidae Scarlato & Starobogatov, 1979 accepted as Poroledinae Scarlato & Starobogatov, 1979
- Family Pristiglomidae H. L. Sanders & J. A. Allen, 1973 (3)
- Family Pseudocyrtodontidae Maillieux, 1939 † (2)
- Family Radiidentidae Egorova & Starobogatov, 1975 accepted as Siliculidae J. A. Allen & H. L. Sanders, 1973
- Family Saturniidae J. A. Allen & F. Hannah, 1986 accepted as Neilonellidae Schileyko, 1989
- Family Siliculidae J. A. Allen & H. L. Sanders, 1973 (7)
- Family Solenellidae A. d'Orbigny, 1846 accepted as Malletiidae H. Adams & A. Adams, 1858 (1846)
- Family Spinulidae J. A. Allen & H. L. Sanders, 1982 accepted as Ledellinae J. A. Allen & H. L. Sanders, 1982
- Family Strabidae Prantl & Růžička, 1954 † (5)
- Family Tindariidae A. E. Verrill & K. J. Bush, 1897 (28)
- Family Yoldiidae Dall, 1908 (181)
- Family Zealedidae Scarlato & Starobogatov, 1979 accepted as Ledellinae J. A. Allen & H. L. Sanders, 1982
- Superfamily Pristiglomoidea H. L. Sanders & J. A. Allen, 1973 accepted as Nuculanoidea H. Adams & A. Adams, 1858 (1854)
- Superfamily Sareptoidea Stoliczka, 1870 (15)
- Order Nuculida (359)
- Order Protobranchia incertae sedis † (4)
- Order Solemyida (89)
- Infraclass Cryptodonta † (342)
- Class Caudofoveata (143)
- Class Cephalopoda (1 834)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 697)
- Class Lamellibranchiata accepted as Bivalvia
- Class Loricata accepted as Polyplacophora
- Class Mollusca incertae sedis † (372)
- Class Monoplacophora (229)
- Class Pelecypoda accepted as Bivalvia
- Class Polyplacophora (1 377)
- Class Polyplaxiphora accepted as Polyplacophora
- Class Rostroconchia † (64)
- Class Scaphopoda (752)
- Class Solenoconchia accepted as Scaphopoda
- Class Solenogastres (313)
- Subclass Chaetodermomorpha accepted as Caudofoveata