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 (132 851)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 013)
- Class Caudofoveata (143)
- Class Cephalopoda (1 834)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 753)
- 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)
- Subclass Neoloricata (1 325)
- Order Callochitonida (55)
- Order Chitonida (963)
- Suborder Acanthochitonina (405)
- Superfamily Acanthochitonoidea Pilsbry, 1893 accepted as Cryptoplacoidea H. Adams & A. Adams, 1858
- Superfamily Cryptoplacoidea H. Adams & A. Adams, 1858 (236)
- Family Acanthochitidae Rochebrune, 1882 accepted as Acanthochitonidae Simroth, 1894 (1881)
- Family Acanthochitonidae Simroth, 1894 (1881) (201)
- Family Choriplacidae Ashby, 1928 (1)
- Family Cryptoplacidae H. Adams & A. Adams, 1858 (27)
- Subfamily Cryptoplacinae H. Adams & A. Adams, 1854 accepted as Cryptoplacidae H. Adams & A. Adams, 1858
- Genus Cryptoplax Blainville, 1818 (27)
- Subgenus Cryptoplax (Notoplax) H. Adams, 1862 accepted as Notoplax H. Adams, 1862
- Species Cryptoplax acerocostata Sirenko, Saito & Nguyen. 2024
- Species Cryptoplax brunoi Saito, 2023
- Species Cryptoplax burrowi (E. A. Smith, 1884)
- Species Cryptoplax caledonica Risbec, 1946 accepted as Cryptoplax risbeci Kaas & Van Belle, 1998
- Species Cryptoplax caledonicus Rochebrune, 1882 accepted as Cryptoplax larvaeformis (Burrow, 1815)
- Species Cryptoplax coronatus Rochebrune, 1884 accepted as Cryptoplax larvaeformis (Burrow, 1815)
- Species Cryptoplax dawydoffi Leloup, 1937
- Species Cryptoplax depressus Blainville, 1818 accepted as Cryptoconchus porosus (Burrow, 1815)
- Species Cryptoplax dimidiata Ang, 1967
- Species Cryptoplax dimidiatus Ang, 1967 accepted as Cryptoplax dimidiata Ang, 1967
- Species Cryptoplax dupuisi Ashby, 1931
- Species Cryptoplax elioti Pilsbry, 1901
- Species Cryptoplax enigmaticus Leloup, 1980 accepted as Cryptoplax sykesi Thiele, 1909
- Species Cryptoplax erythraeus Selli, 1974 † accepted as Cryptoplax sykesi Thiele, 1909
- Species Cryptoplax evanescens Cooke, 1913 accepted as Cryptoplax elioti Pilsbry, 1901
- Species Cryptoplax gatliffi T. S. Hall, 1904 † accepted as Cryptoplax pritchardi T. S. Hall, 1904 †
- Species Cryptoplax hartmeyeri Thiele, 1911
- Species Cryptoplax heurteli Rochebrune, 1882 accepted as Cryptoplax larvaeformis (Burrow, 1815)
- Species Cryptoplax iredalei Ashby, 1923
- Subspecies Cryptoplax iredalei attenuata Iredale & Hull, 1925 accepted as Cryptoplax iredalei Ashby, 1923
- Subspecies Cryptoplax iredalei meridiana Iredale & Hull, 1925 accepted as Cryptoplax iredalei Ashby, 1923
- Species Cryptoplax japonica Pilsbry, 1901
- Species Cryptoplax japonicus Pilsbry, 1901 accepted as Cryptoplax japonica Pilsbry, 1901
- Species Cryptoplax jugosus Bergenhayn, 1930 accepted as Cryptoplax elioti Pilsbry, 1901
- Species Cryptoplax larvaeformis (Burrow, 1815)
- Species Cryptoplax ludbrookae Ashby, 1940 †
- Species Cryptoplax margitae Dulai, 2001 †
- Species Cryptoplax menkrawitensis Beets, 1941 †
- Species Cryptoplax meridiana Iredale & Hull, 1925 accepted as Cryptoplax iredalei Ashby, 1923
- Species Cryptoplax mjoebergi Bergenhayn, 1933 accepted as Cryptoplax burrowi (E. A. Smith, 1884)
- Species Cryptoplax montanoi Rochebrune, 1882
- Species Cryptoplax mystica Iredale & Hull, 1925
- Species Cryptoplax numicus Ashby & Cotton, 1939 †
- Species Cryptoplax oculata (Quoy & Gaimard, 1835)
- Species Cryptoplax peroni Rochebrune, 1882
- Species Cryptoplax plana Ang, 1967
- Species Cryptoplax planus Ang, 1967 accepted as Cryptoplax plana Ang, 1967
- Species Cryptoplax pritchardi T. S. Hall, 1904 †
- Species Cryptoplax propior Is. Taki & Iw. Taki, 1930
- Species Cryptoplax rhodoplax Pilsbry, 1901 accepted as Cryptoplax japonica Pilsbry, 1901
- Species Cryptoplax risbeci Kaas & Van Belle, 1998
- Species Cryptoplax royana Iredale & Hull, 1925
- Species Cryptoplax sicus Ashby & Cotton, 1939 †
- Species Cryptoplax striata (Lamarck, 1819)
- Species Cryptoplax striatus (Lamarck, 1819) accepted as Cryptoplax striata (Lamarck, 1819)
- Species Cryptoplax sykesi Thiele, 1909
- Species Cryptoplax torresianus Rochebrune, 1882 accepted as Cryptoplax striata (Lamarck, 1819)
- Species Cryptoplax unciniferus Rochebrune, 1882 accepted as Cryptoplax larvaeformis (Burrow, 1815)
- Species Cryptoplax vittata Ang, 1967
- Family Hemiarthridae Sirenko, 1997 (5)
- Family Makarenkoplacidae Sirenko & Dell'Angelo, 2015 † (2)
- Superfamily Mopalioidea Dall, 1889 (169)
- Superfamily Tonicelloidea Simroth, 1894 accepted as Mopalioidea Dall, 1889
- Suborder Chitonina (558)
- Suborder Ischnochitonina accepted as Chitonina
- Order Lepidopleurida (307)
- Subclass Palaeoloricata † (47)
- Subclass Polyplacophora incertae sedis † (5)
- Class Polyplaxiphora accepted as Polyplacophora
- Class Rostroconchia † (64)
- Class Scaphopoda (752)
- Class Solenoconchia accepted as Scaphopoda
- Class Solenogastres (313)
- Subclass Chaetodermomorpha accepted as Caudofoveata