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
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- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Subphylum Chelicerata
- Subphylum Crustacea
- Subphylum Hexapoda
- Subphylum Myriapoda
- Subphylum Trilobitomorpha †
- Class Marrellomorpha †
- Class Merostomoidea †
- Class Paratrilobita †
- Class Trilobita †
- Order Agnostida †
- Order Asaphida †
- Family Alsataspididae †
- Family Andrarinidae †
- Family Anomocarellidae †
- Family Anomocaridae Poulsen, 1927 †
- Family Aphelaspididae †
- Family Asaphida (awaiting allocation) †
- Family Asaphidae Burmeister, 1843 †
- Family Auritamiidae †
- Family Bohemillidae †
- Family Catillicephalidae Raymond, 1938 †
- Family Ceratopygidae Linnarsson, 1869 †
- Family Cyclopygidae †
- Family Dikelocephalidae †
- Family Dikelokephalinidae †
- Family Dionididae †
- Family Ellipsotaphridae Kobayashi & Hamada, 1971 †
- Family Eulomidae Kobayashi, 1955 †
- Family Eurekiidae †
- Family Hapalopleuridae Harrington & Leanza, 1957 †
- Family Hungaiidae †
- Family Idahoiidae †
- Family Ityophoridae †
- Family Kainellidae †
- Family Mileidae †
- Family Nileidae †
- Family Opipeuteridae †
- Family Orometopidae †
- Family Parabolinoididae Lochman, 1956 †
- Family Pterocephalidae † accepted as Pterocephaliidae Kobayashi, 1935 †
- Family Pterocephaliidae Kobayashi, 1935 †
- Family Ptychaspididae Raymond, 1924 †
- Family Raphiophoridae †
- Family Remopleuridae †
- Family Remopleurididae Hawle & Corda, 1847 †
- Family Rhyssometopidae Oepik, 1967 †
- Family Saukiidae Ulrich & Resser, 1930 †
- Family Taihungshaniidae †
- Family Trinucleidae Hawle & Corda, 1847 †
- Genus Auritolithus Holloway, Banks & Banks, 2022 †
- Genus Broeggeria Bancroft, 1933 † accepted as Broeggerolithus Bancroft, 1935 †
- Genus Broeggerolithus Bancroft, 1935 †
- Genus Cryptolites Rafinesque, 1832 † accepted as Cryptolithus Green, 1832 †
- Genus Cryptolithus Green, 1832 †
- Species Cryptolithus multiseriatus †
- Species Cryptolithus tesselatus Green, 1832 †
- Genus Deanaspis Hughes, Ingham & Addison, 1975 †
- Genus Fantasticolithus Fortey & Gutiérrez-Marco, 2022 †
- Genus Iputaspis McCobb & Popov, 2017 †
- Genus Kimakaspis Ghobadi Pour, McCobb, Owens & Popov, 2011 †
- Genus Lloydolithus Bancroft, 1933 †
- Genus Marrolithus Bancroft, 1929 †
- Genus Ningkianolithus Lu, 1957 †
- Genus Novaspis Whittington, 1941 †
- Genus Onnia Bancroft, 1933 †
- Genus Stapeleyella Whittard, 1955 †
- Genus Tretaspis M'Coy, 1849 †
- Genus Trinucleus Murchison, 1839 †
- Order Corynexochida †
- Order Harpetida †
- Order Lichida †
- Order Naraoiida †
- Order Nektaspida †
- Order Odontopleurida †
- Order Olenellida †
- Order Phacopida †
- Order Polymerida †
- Order Proetida †
- Order Ptychopariida †
- Order Redlichiida †
- Order Trilobita (awaiting allocation) †
- Family Jamrogiidae Bentley, Jago & Cooper, 2009 †
- Family Missisquoiidae Hupé, 1955 †
- Genus Elleria Raymond, 1944 †
- Genus Indigestus Özdikmen, 2009 †
- Genus Moolatrilo Malkani, 2019 †
- Genus Nanshihmenia Zhang & Fan, 1960 †
- Genus Nanshihmenia Chang, 1960 † accepted as Nanshihmenia Zhang & Fan, 1960 †
- Genus Peculicephalina Qian, 1985 †
- Genus Remeleaspis Basse, 2007 †
- Order Trilobitomorpha (awaiting allocation) †
- 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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