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
5 Click to see the taxon details page
- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Subphylum Chelicerata
- Subphylum Crustacea
- Class Branchiopoda
- Class Cephalocarida
- Class Crustacea (awaiting allocation)
- Class Crustacea incertae sedis
- Class Ichthyostraca
- Class Malacostraca
- Class Maxillopoda
- Class Ostracoda
- Order Archaeocopida
- Order Bradoriida †
- Order Cytheroidea (awaiting allocation)
- Order Eridostracoda
- Order Halocyprida
- Family Deeveyidae Kornicker & Iliffe, 1985
- Family Entomoconchoidae
- Family Halocypridae accepted as Halocyprididae Dana, 1853
- Family Halocyprididae Dana, 1853
- Genus Alacia Poulsen, 1973
- Genus Alacia Martens, 1979
- Genus Archiconchoecemma Chavtur & Stovbun, 2003
- Genus Archiconchoecerra Chavtur & Stovbun, 2003
- Genus Archiconchoecetta Chavtur & Stovbun, 2003
- Genus Archiconchoecia Müller, 1894
- Genus Archiconchoecidia Chavtur, 2003
- Genus Archiconchoecilla Chavtur & Stovbun, 2003
- Genus Archiconchoecinna Chavtur & Stovbun, 2003
- Genus Archiconchoecissa Chavtur & Stovbun, 2003
- Genus Austrinoecia Chavtur & Angel, 2011
- Genus Bathyconchoecetta Chavtur, 2018
- Genus Bathyconchoecia Deevey, 1968
- Genus Bathyconchoecilla Chavtur, 2018
- Genus Boroecia Poulsen, 1973
- Genus Chavturia Angel, 2013
- Genus Clausoecia Chavtur & Angel, 2011
- Genus Conchoecetta Claus, 1890
- Genus Conchoecia Dana, 1849
- Genus Conchoecilla Claus, 1890
- Genus Conchoecissa Claus, 1890
- Genus Deeveyoecia Chavtur & Angel, 2011
- Genus Discoconchoecia Martens, 1979
- Genus Euconchoecia Müller, 1890
- Genus Felia accepted as Fellia Poulsen, 1969
- Genus Fellia Poulsen, 1969
- Genus Gaussicia Poulsen, 1973
- Genus Guassicia accepted as Gaussicia Poulsen, 1973
- Genus Halocypretta Chavtur & Stovbun, 2008
- Genus Halocypria Poulsen, 1969
- Genus Halocypris Dana, 1853
- Genus Hyalocoecia Chavtur, 2018
- Genus Juryoecia Chavtur & Angel, 2011
- Genus Kyrtoecia Chavtur & Angel, 2011
- Genus Lophuroecia Chavtur, 2018
- Genus Loricoecia Poulsen, 1973
- Genus Macrochoecilla Chavtur, 2018
- Genus Macroconchoecia Granata & Caporaccio, 1949
- Genus Mamilloecia Graves, 2012
- Genus Metaconchoecemma Chavtur & Angel accepted as Kyrtoecia Chavtur & Angel, 2011
- Genus Metaconchoecerra Chavtur & Angel accepted as Austrinoecia Chavtur & Angel, 2011
- Genus Metaconchoecetosa Chavtur & Angel accepted as Rotundoecia Chavtur & Angel, 2011
- Genus Metaconchoecetta Chavtur & Angel accepted as Muelleroecia Chavtur & Angel, 2011
- Genus Metaconchoecia Kock, 1992
- Genus Metaconchoecia Granata & di Caporiacco, 1949
- Genus Metaconchoecidia Chavtur & Angel accepted as Nasoecia Chavtur & Angel, 2011
- Genus Metaconchoecilia Chavtur & Angel accepted as Clausoecia Chavtur & Angel, 2011
- Genus Metaconchoecilla Chavtur & Angel accepted as Juryoecia Chavtur & Angel, 2011
- Genus Metaconchoecinna Chavtur & Angel accepted as Deeveyoecia Chavtur & Angel, 2011
- Genus Metaconchoecissa Chavtur & Angel accepted as Vityazoecia Chavtur & Angel, 2011
- Genus Metaonchoecia accepted as Metaconchoecia Granata & di Caporiacco, 1949
- Genus Microconchoecia accepted as Mikroconchoecia Claus, 1891
- Genus Mikroconchoecia Claus, 1891
- Genus Mollicia Poulsen, 1973
- Genus Muelleroecia Chavtur & Angel, 2011
- Genus Nasoecia Chavtur & Angel, 2011
- Genus Obtusoecia Martens, 1979
- Species Obtusoecia antarctica (G.W. Müller, 1906)
- Species Obtusoecia obtusata (Sars, 1866)
- Genus Orthoconchoecia Martens, 1979
- Genus Orthoconchoecia Granata & Caporiacco, 1949
- Genus Paraconchoecia Claus, 1891
- Genus Paramollicia Poulsen, 1973
- Genus Parthenoecia Chavtur, 2018
- Genus Parvidentoecia Chavtur, 2018
- Genus Platyconchoecia Poulsen, 1973
- Genus Polyconchoecia Xiang, Chen & Du in Du et al., 2018
- Genus Porroecia Martens, 1979
- Genus Proceroecia Kock, 1992
- Genus Pseudoconchoecia Claus, 1891
- Genus Rotundoecia Chavtur & Angel, 2011
- Genus Schornikovoecia Chavtur, 2018
- Genus Scottoecia Angel, 2012
- Genus Septemoecia Angel & Brandão, 2018
- Genus Spinoecia Poulsen, 1973
- Genus Vityazoecia Chavtur & Angel, 2011
- Family Polycopidae Sars, 1865
- Family Quasipolycopidae Jones, 1995 †
- Family Thaumatocyprididae Müller, 1906
- Order Leiocopa
- Order Leperditicopida †
- Order Metacopida
- Order Myodocopida
- Order Ostracoda (awaiting allocation)
- Order Ostracoda incertae sedis
- Order Palaeocopida
- Order Phosphatocopida †
- Order Platycopida
- Order Podocopida
- Class Remipedia
- Order Cyclida †
- Genus Anatifera Meuschen, 1787
- Genus Dickinsonia Tasch, 1963 † accepted as Elmocephalus Tasch, 1964 †
- Genus Elmocephalus Tasch, 1964 †
- Subphylum Hexapoda
- Subphylum Myriapoda
- Subphylum Trilobitomorpha †
- Class Arachnomorpha (awaiting allocation)
- Class Arthropoda (awaiting allocation)
- Class Artiopoda †
- Class Crustaceomorpha incertae sedis †
- Class Dinocaridida †
- Class Labrophora incertae sedis
- Class Lamellipedia incertae sedis
- Class Megacheira †
- Class Thylacocephala †
- Class Xenocarida incertae sedis
- Order Canadaspidida † accepted as Hymenocarina †
- Order Cheloniellida †
- Order Emeraldellida † accepted as Arthropoda
- Order Fuxianhuiida †
- Order Habeliida †
- Order Hymenocarina †
- Order Isoxyida †
- Order Pectocaridida † accepted as Hymenocarina †
- Order Waptiida † accepted as Hymenocarina †
- Family Bomakellidae Fedonkin, 1987 †
- Family Burgessiidae Walcott, 1912 †
- Family Emeraldellidae Raymond, 1935 †
- Family Guangweicarididae Luo, Fu, Hu, Li, Hou, You, Pang & Liu, 2007 †
- Genus Aaveqaspis Peel & Stein, 2009 †
- Genus Acheronauta Pulsipher, Anderson, Wright, Kluessendorf, Mikulic & Schiffbauer, 2022 †
- Genus Arthroaspis Stein, Budd, Peel & Harper, 2013 †
- Genus Astutuscaris Jiao & Du, 2022 †
- Genus Bennettarthra Fayers, Trewin & Morrissey, 2010 †
- Genus Bushizheia O'Flynn & Liu in O'Flynn et al., 2020 †
- Genus Chuandianella Hou & Bergström, 1991 †
- Genus Dioxycaris Gürich, 1929 †
- Genus Dongshanocaris Hou, Bergström, Wang, Feng & Chen, 1999 †
- Genus Duraznovis Lara, Cariglino & Zavattieri in Lara et al., 2019 †
- Genus Duraznovs Lara, Cariglino & Zavattieri in Lara et al., 2019 † accepted as Duraznovis Lara, Cariglino & Zavattieri in Lara et al., 2019 †
- Genus Esmeraldacaris Waggoner, 2003 †
- Genus Fibulacaris Izquierdo-López & Caron, 2019 †
- Genus Kiisortoqia Stein, 2010 †
- Genus Kylinxia Zeng, Zhao, Niu, Zhu & Huang, 2020 †
- Genus Lihuacaris Jiao, Pates, Lerosey-Aubril, Ortega-Hernández, Yang, Lan & Zhang, 2021 †
- Genus Norikeya Tanaka, Siveter & Williams, 2013 †
- Genus Nothozoe Barrande, 1872 †
- Genus Nothozoe Barrande in Bigsby, 1868 † accepted as Nothozoe Barrande, 1872 †
- Genus Notozoe Zittel, 1885 † accepted as Nothozoe Barrande, 1872 †
- Genus Pakucaris Izquierdo-López & Caron, 2021 †
- Genus Pambdelurion Budd, 1998 †
- Genus Parvibellus Liu, Dunlop, Steiner & Shu, 2022 †
- Genus Pleuralata McCoy, Strother & Briggs, 2012 †
- Genus Pseudoangustidontus Van Roy & Tetlie, 2006 †
- Genus Pteroessa Hudson & Gosse, 1886
- Genus Sidneyia Walcott, 1911 †
- Genus Siriocaris Lagebro, Stein & Peel, 2009 †
- Genus Vermontcaris Pari, Briggs & Gaines, 2022 †
- Genus Youti Smith, Long, Dhungana, Dobson, Yang & Zhang, 2024 †
- 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
- 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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