Between brackets is the number of accepted species
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2 Shows the number of accepted species within the taxon
3 The last expanded taxon is highlighted
4 Click on "+" to expand/show all child taxa
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- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Ecdysozoa incertae sedis †
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Class Aplacophora
- Class Bivalvia
- Order Actinodontoida †
- Order Afghanodesmatida †
- Order Anomalodesmata
- Order Anomalodesmata (awaiting allocation)
- Order Antipleuroida †
- Order Arcida
- Order Arcoida accepted as Arcida
- Order Bivalvia (awaiting allocation)
- Order Bivalvia incertae sedis
- Order Cardiida
- Order Carditoida †
- Order Cyrtodontida †
- Order Euheterodonta incertae sedis
- Order Fordillida †
- Order Hippuritida †
- Order Hippuritoida † accepted as Hippuritida †
- Order Limoida
- Order Megalodontida †
- Order Modiomorphoida †
- Order Myalinida †
- Order Myoida
- Order Mytiloida
- Order Nuculanida
- Order Nuculanoida accepted as Nuculanida
- Order Nuculida
- Order Nuculoida accepted as Nuculida
- Order Orthonotida
- Order Ostreata incertae sedis
- Order Ostreida
- Order Ostreoida accepted as Ostreida
- Order Pectinida
- Order Pectinoida accepted as Pectinida
- Order Pelecypoda †
- Order Pholadomyoida
- Order Praecardioida †
- Order Protobranchia (awaiting allocation) †
- Order Pterioida
- Order Pteriomorphia (awaiting allocation)
- Order Solemyida
- Order Solemyoida accepted as Solemyida
- Order Trigoniida
- Order Trigonioida accepted as Trigoniida
- Order Tuarangiida †
- Order Unionoida
- Family Actinodontophoridae Newell, 1969 †
- Family Amblemidae
- Family Anthracosiidae Amalizky, 1892 †
- Genus Carbonicola M'Coy in Sedgwick & McCoy, 1855 †
- Species Carbonicola acuta (J. Sowerby, 1813) †
- Species Carbonicola aquilina (J de C. Sowerby, 1828) †
- Genus Palaeanodonta Amalitzki, 1895 †
- Family Archanodontidae Weir, 1969 †
- Family Deccanoidae Shah & Patel, 2024 †
- Family Etheriidae Deshayes, 1830
- Family Ferganoconchidae Martinson, 1956 †
- Family Hydriidae accepted as Hyriidae Swainson, 1840
- Family Hyriidae Swainson, 1840
- Family Iridinidae Swainson, 1840
- Family Liaoningiidae Yu & Dong, 1993 †
- Family Margaritiferidae Haas, 1940
- Family Microdontidae
- Family Monginaiidae Delvene & Munt in Delvene et al., 2022 †
- Family Mutelidae Swainson, 1840
- Family Mycetopodidae Gray, 1840
- Family Pachycardiidae Cox, 1961 †
- Family Palaeomutelidae Weir, 1967 †
- Family Plicatounionidae Kobayashi, 1968 †
- Family Prilukiellidae Starabogatov, 1970 †
- Family Pseudocardiniidae Martinson, 1961 †
- Family Rhaetidiidae Dominici & Danise, 2024 †
- Family Silesunionidae Skawina & Dzik, 2011 †
- Family Tamesnellidae Van Damme & Bogan in Van Damme et al., 2015 †
- Family Tegulaedontidae Van Damme & Bogan in Van Damme et al., 2015 †
- Family Trigonodidae Modell, 1942 †
- Family Unionida incertae sedis
- Family Unionidae Rafinesque, 1820
- Family Unionoida (awaiting allocation)
- Family Unionoidea (awaiting allocation)
- Family Unionoidea incertae sedis
- Order Venerida
- Genus Salterella Jones & Woodward, 1888 † accepted as Salterina Jones & Woodward, 1888 †
- Genus Salterina Jones & Woodward, 1888 †
- Genus Sinocaris Mansuy, 1912 †
- Genus Solenocaris Meek, 1871 † accepted as Strigocaris Vogdes, 1889 †
- Genus Strigocaris Vogdes, 1889 †
- Class Calyptoptomatida †
- Class Camerothecida
- Class Cephalopoda
- Class Cricoconarida †
- Class Gastropoda
- Class Helcionelloida †
- Class Mollusca (awaiting allocation)
- Class Mollusca incertae sedis
- Class Monoplacophora
- Class Paragastropoda †
- Class Polyplacophora
- Class Rostroconchia †
- Class Scaphopoda
- Class Stenothecoida †
- Class Tentaculita †
- Family Maikhanellidae Missarzhevsky, 1989 †
- Genus Lingulocaris Salter, 1866 †
- Genus Modiolocaris Peach in Jehu & Campbell, 1917 † accepted as Lingulocaris Salter, 1866 †
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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