Between brackets is the number of accepted species
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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
- Subphylum Cephalochordata
- Subphylum Tunicata accepted as Urochordata
- Subphylum Urochordata
- Subphylum Vertebrata
- Superclass Tetrapoda
- Class Amphibia
- Class Aves
- Class Mammalia
- Subclass Prototheria
- Subclass Theria
- Infraclass Eutheria
- Order Afrosoricida
- Order Amphitheriida †
- Order Anagalida †
- Order Arctostylopida †
- Order Artiodactyla
- Order Asioryctitheria †
- Order Astrapotheria †
- Order Bellua accepted as Perissodactyla
- Order Bibymalagasia †
- Order Carnivora
- Order Carnivoramorpha incertae sedis †
- Order Cetacea
- Family Acrodelphinidae Rice, 1984 †
- Family Aetiocetidae Emlong, 1966 †
- Family Agaphelidae Gray, 1870 accepted as Balaenopteridae Gray, 1864
- Family Agorophiidae Abel, 1913 †
- Family Albireonidae Barnes, 1984 †
- Family Allodelphinidae Barnes, 2006 †
- Family Ambulocetidae Thewissen et al., 1996 †
- Family Ashleycetidae Sanders & Geisler, 2015 †
- Family Balaenidae Gray, 1821
- Family Balaenopteridae Gray, 1864
- Family Balaenopteroidea incertae sedis †
- Family Balanadae Gray, 1821 accepted as Balaenidae Gray, 1821
- Family Basilosauridae Cope, 1868 †
- Family Belugidae Gray, 1868 accepted as Monodontidae Gray, 1821
- Family Catodontidae F. Cuvier, 1836 accepted as Physeteridae Gray, 1821
- Family Cetacea (awaiting allocation)
- Family Cetotheriidae Brandt, 1872 †
- Family Cetotheriopsidae Brandt, 1872 †
- Family Dalpiazinidae de Muizon, 1988 †
- Family Dalpiaziniidae † accepted as Dalpiazinidae de Muizon, 1988 †
- Family Delphinapteridae Kasuya, 1973 accepted as Delphinidae Gray, 1821
- Family Delphinapteridae Gill, 1871 accepted as Monodontidae Gray, 1821
- Family Delphinidae Gray, 1821
- Family Delphinoidae Guerin, 1874 accepted as Delphinidae Gray, 1821
- Family Delphinoidea incertae sedis
- Family Delphinorhynchidae Sclater, 1887 accepted as Odontoceti incertae sedis
- Family Delphinusideae Lesson, 1842 accepted as Delphinidae Gray, 1821
- Family Eomysticetidae Sanders & Barnes, 2002 †
- Family Eschrichtidae Miller & Kellogg, 1955 accepted as Eschrichtiidae Ellerman & Morrison-Scott, 1951
- Family Eschrichtiidae Ellerman & Morrison-Scott, 1951
- Family Eurhinodelphidae Abel, 1901 †
- Family Eurhinodelphinidae Abel, 1901 †
- Family Globicephalidae Nishiwaki, 1963 accepted as Delphinidae Gray, 1821
- Family Globidelphinidae Nishiwaki, 1963 accepted as Delphinidae Gray, 1821
- Family Globiocephalidae Gray, 1850 accepted as Delphinidae Gray, 1821
- Family Grampidae Gray, 1871 accepted as Delphinidae Gray, 1821
- Family Hemisyntrachelidae Slijper, 1936 †
- Family Heterodontidae Girard, 1852 accepted as Ziphiidae Gray, 1864
- Family Holodontidae Brandt, 1873 accepted as Delphinidae Gray, 1821
- Family Hyperoodontidae Gray, 1846 accepted as Ziphiidae Gray, 1864
- Family Hypognathodontidae Brandt, 1873 accepted as Odontoceti incertae sedis
- Family Iniidae Gray, 1846
- Family Inticetidae Lambert, de Muizon, Malinverno, Di Celma, Urbina & Bianucci, 2018 †
- Family Kekenodontidae Mitchell, 1989 †
- Family Kentriodontidae Slijper, 1936 †
- Family Kogiidae Gill, 1871
- Family Lipotidae Zhou, 1979
- Family Mammalodontidae Mitchell, 1989 †
- Family Mirocetidae Sanders & Geisler, 2015 † accepted as Xenorophidae Uhen, 2008 †
- Family Monodontidae Gray, 1821
- Family Mystacodontidae Lambert et al., 2017 †
- Family Mysticeti incertae sedis
- Family Neobalaenidae Gray, 1873
- Family Norvallidae Burnett, 1830 accepted as Monodontidae Gray, 1821
- Family Odobenocetopsidae de Muizon, 1993 †
- Family Odontoceti incertae sedis
- Family Orcadae Gray, 1871 accepted as Delphinidae Gray, 1821
- Family Orcaelidae Nishiwaki, 1972 accepted as Delphinidae Gray, 1821
- Family Orcaellidae Nishiwaki, 1963 accepted as Delphinidae Gray, 1821
- Family Phocaenidae Gray, 1825 accepted as Phocoenidae Gray, 1825
- Family Phocoenidae Gray, 1825
- Family Physalinidae Gray, 1868 accepted as Balaenopteridae Gray, 1864
- Family Physeteridae Gray, 1821
- Family Physeteroidea (awaiting allocation)
- Family Physeteroidea incertae sedis
- Family Platanistidae Gray, 1846
- Family Platanistoidea incertae sedis
- Family Pontoporiidae Gray, 1870
- Family Protocetidae Stromer, 1908 †
- Family Rachianectidae Weber, 1904 accepted as Eschrichtiidae Ellerman & Morrison-Scott, 1951
- Family Remingtonocetidae Kumar & Sahni, 1986 †
- Family Rhabdosteidae Gill, 1871 †
- Family Squalodelphidae Dal Piaz, 1916 † accepted as Hyperoodontidae Gray, 1846
- Family Squalodelphinidae Dal Piaz, 1916 †
- Family Squalodontidae Brandt, 1873 †
- Family Squaloziphiidae Muizon, 1991 †
- Family Stenidae Fraser & Purves, 1960 accepted as Delphinidae Gray, 1821
- Family Stenodelphidae accepted as Iniidae Gray, 1846
- Family Susuidae Hershkovitz, 1966 accepted as Platanistidae Gray, 1846
- Family Susuoidea Gray, 1868 accepted as Platanistidae Gray, 1846
- Family Tachynicidae Brookes, 1828 accepted as Monodontidae Gray, 1821
- Family Thalassotherii incertae sedis †
- Family Tranatocetidae Gol'din & Steeman, 2015 †
- Family Triisodontidae †
- Family Waipatiidae Fordyce, 1994 †
- Family Xenorophidae Uhen, 2008 †
- Family Xiphidae Ameghino, 1889 accepted as Ziphiidae Gray, 1864
- Family Zignodelphidae Rice, 1998 †
- Family Ziphiidae Gray, 1864
- Genus Africanacetus Bianucci, Lambert & Post, 2007 †
- Genus Aliama Gray, 1864 accepted as Ziphius Cuvier, 1823
- Genus Anodon Wagler, 1830 accepted as Hyperoodon Lacépède, 1804
- Genus Anoplonassa Cope, 1869 †
- Genus Aodon Lesson, 1828 accepted as Mesoplodon Gervais, 1850
- Genus Aporotus Du Bus, 1868
- Genus Archaeoziphius Lambert & Louwye, 2006 †
- Genus Argyrodelphis Lydekker, 1894
- Genus Belemnoziphius Huxley, 1864 †
- Genus Beneziphius Lambert, 2005 †
- Genus Berardiopsis Portis, 1886 †
- Genus Berardius Duvernoy, 1851
- Genus Berardus Gray, 1863 accepted as Berardius Duvernoy, 1851
- Genus Callidon Gray, 1871 accepted as Mesoplodon Gervais, 1850
- Genus Calliodon Trouessart, 1898
- Genus Caviziphius Bianucci & Post, 2005 †
- Genus Cetodiodon Jacob, 1825 accepted as Hyperoodon Lacépède, 1804
- Genus Ceto-diodon Jacob, 1825 accepted as Cetodiodon Jacob, 1825
- Genus Cetolites †
- Genus Cetorhynchus Gervais, 1861 †
- Genus Chaenocetus Eschricht, 1846 accepted as Hyperoodon Lacépède, 1804
- Genus Chaenodelphinus Eschricht, 1843 accepted as Hyperoodon Lacépède, 1804
- Genus Chaenodelphis Wagner in Schreber, 1847 accepted as Hyperoodon Lacépède, 1804
- Genus Chenocetus Gray, 1846 accepted as Hyperoodon Lacépède, 1804
- Genus Chenodelphinus Agassiz, 1846 accepted as Hyperoodon Lacépède, 1804
- Genus Chenodelphinus Duvernoy, 1851 accepted as Hyperoodon Lacépède, 1804
- Genus Choneziphius Duvernoy, 1851 †
- Genus Diochotichus Ameghino, 1894 †
- Genus Diodon Lesson, 1828 accepted as Mesoplodon Gervais, 1850
- Genus Dioplodon Gervais, 1855 accepted as Mesoplodon Gervais, 1850
- Genus Diplodon Gray, 1866 accepted as Mesoplodon Gervais, 1850
- Genus Dolichodon Gray, 1866 accepted as Mesoplodon Gervais, 1850
- Genus Eboroziphius Leidy, 1876 †
- Genus Epiodon Rafinesque, 1814 accepted as Ziphius Cuvier, 1823
- Genus Epiodon Burmeister, 1867 accepted as Ziphius Cuvier, 1823
- Genus Frasercetus Moore, 1968 † accepted as Hyperoodon Lacépède, 1804
- Genus Globicetus Bianucci, Miján, Lambert, Post & Mateus, 2013 †
- Genus Heterodon Blainville in Demarest, 1817 accepted as Hyperoodon Lacépède, 1804
- Genus Hiperoodon Lahille, 1905 accepted as Hyperoodon Lacépède, 1804
- Genus Hyperadon J.A. Allen, 1869 accepted as Hyperoodon Lacépède, 1804
- Genus Hyperaodon Cope, 1869 accepted as Hyperoodon Lacépède, 1804
- Genus Hyperdordon Gray, 1821 accepted as Hyperoodon Lacépède, 1804
- Genus Hyperdordons Gray, 1821 accepted as Hyperoodon Lacépède, 1804
- Genus Hyperhoodon Gervais, 1850 accepted as Hyperoodon Lacépède, 1804
- Genus Hyperodon Illiger, 1815 accepted as Hyperoodon Lacépède, 1804
- Genus Hyperodon Cope, 1865 accepted as Ziphius Cuvier, 1823
- Genus Hyperondon Hall & Kelson, 1959 accepted as Ziphius Cuvier, 1823
- Genus Hyperoodon Lacépède, 1804
- Genus Hyperoodus Schulze, 1897 accepted as Hyperoodon Lacépède, 1804
- Genus Hypodon Haldeman, 1841 accepted as Ziphius Cuvier, 1823
- Genus Hyprodon Duméril, 1806 accepted as Hyperoodon Lacépède, 1804
- Genus Ihlengesi Bianucci, Lambert & Post, 2007 †
- Genus Imocetus Bianucci, Miján, Lambert, Post & Mateus, 2013 †
- Genus Indopacetus Moore, 1968
- Genus Izikoziphius Bianucci, Lambert & Post, 2007 †
- Genus Khoikhoicetus Bianucci, Lambert & Post, 2007 †
- Genus Lagenocetus Gray, 1863 accepted as Hyperoodon Lacépède, 1804
- Genus Lagocetus Gray, 1866 accepted as Hyperoodon Lacépède, 1804
- Genus Mamaziphius Bianucci et al., 2024 †
- Genus Medocinia de Muizon, 1988 †
- Genus Mesiodon Gray, 1866 accepted as Mesoplodon Gervais, 1850
- Genus Mesodiodon Duvernoy, 1851 accepted as Mesoplodon Gervais, 1850
- Genus Mesodissodon Duvernoy, 1851
- Genus Mesodon Trouessart, 1898 accepted as Mesoplodon Gervais, 1850
- Genus Mesoodon Brandt, 1873 accepted as Mesoplodon Gervais, 1850
- Genus Mesoplodon Gervais, 1850
- Genus Messapicetus Bianucci, Landini & Varola, 1992 †
- Genus Microberardius Bianucci, Lambert & Post, 2007 †
- Genus Micropteron Eschricht, 1849 accepted as Mesoplodon Gervais, 1850
- Genus Micropterus Wagner in Schreber, 1846 accepted as Mesoplodon Gervais, 1850
- Genus Mikropteron Eschricht, 1849 accepted as Mesoplodon Gervais, 1850
- Genus Nazcacetus Lambert, Bianucci & Post, 2009 †
- Genus Nenga Bianucci, Lambert & Post, 2007 †
- Genus Neoziphius Gray, 1871 accepted as Mesoplodon Gervais, 1850
- Genus Ninoziphius de Muizon, 1983 †
- Genus Nodus Wagler, 1830 accepted as Mesoplodon Gervais, 1850
- Genus Notocetus Moreno, 1892 †
- Genus Oulodon von Haast, 1876 accepted as Mesoplodon Gervais, 1850
- Genus Paikea Oliver, 1922 accepted as Berardius Duvernoy, 1851
- Genus Palaeoziphius Abel, 1905 †
- Genus Pelycorhamphus Cope, 1895 †
- Genus Petrorhynchus Gray, 1865 accepted as Ziphius Cuvier, 1823
- Genus Proroziphius Leidy, 1876 †
- Genus Pterocetus Bianucci, Lambert & Post, 2007 †
- Genus Squalodelphis Piaz, 1919 †
- Genus Tamacetus accepted as Tasmacetus Oliver, 1937
- Genus Tasmacetus Oliver, 1937
- Species Tasmacetus shepherdi Oliver, 1937
- Genus Tusciziphius Bianucci, 1997 †
- Genus Uperoodon Gray, 1843 accepted as Hyperoodon Lacépède, 1804
- Genus Uranodon Illiger, 1811 accepted as Hyperoodon Lacépède, 1804
- Genus Vlodon Palmer, 1904 accepted as Mesoplodon Gervais, 1850
- Genus Xhosacetus Bianucci, Lambert & Post, 2007 †
- Genus Ziphioides Probst, 1886 †
- Genus Ziphiopsis Du Bus, 1868
- Genus Ziphiorhynchus Burmeister, 1865 accepted as Ziphius Cuvier, 1823
- Genus Ziphiorrhynchus Burmeister, 1865 accepted as Ziphius Cuvier, 1823
- Genus Ziphirostrum Du Bus, 1868 †
- Genus Ziphirostrum Van Beneden, 1864 † accepted as Ziphirostrum Du Bus, 1868 †
- Genus Ziphius Cuvier, 1823
- Genus Zyphius Moreno, 1895 accepted as Ziphius Cuvier, 1823
- Genus Brevirostrodelphis Godfrey & Lambert, 2023 †
- Genus Cammackacetus Godfrey & Lambert, 2023 †
- Genus Caolodelphis Godfrey & Lambert, 2023 †
- Genus Delphinavus Lull, 1914 †
- Genus Enigmatocetus Godfrey & Lambert, 2023 †
- Genus Hadrodelphis Kellogg, 1966 †
- Genus Herbeinodelphis Godfrey & Lambert, 2023 †
- Genus Isanacetus Kimura & Ozawa, 2002 †
- Genus Microzeuglodon Stromer von Reichenbach, 1903 †
- Genus Miminiacetus Godfrey & Lambert, 2023 †
- Genus Miodelphis Wilson, 1935 †
- Genus Pictodelphis Godfrey & Lambert, 2023 †
- Genus Platylithax Kellogg, 1931 †
- Genus Protodelphinus Haeckel, 1895 †
- Genus Protodelphinus Dal Piaz, 1922 †
- Genus Sinanodelphis Makiyama, 1936 †
- Genus Westmorelandelphis Godfrey & Lambert, 2023 †
- Order Chiroptera
- Order Cimolesta †
- Order Cingulata
- Order Condylarthra †
- Order Creodonta †
- Order Dermoptera
- Order Desmostylia †
- Order Dinocerata †
- Order Edentata accepted as Eutheria
- Order Embrithopoda †
- Order Erinaceomorpha
- Order Eulipotyphla
- Order Eutheria (awaiting allocation)
- Order Hyracoidea
- Order Insectivora accepted as Eutheria
- Order Lagomorpha
- Order Leptictida †
- Order Lipotyphla † accepted as Eulipotyphla
- Order Litopterna †
- Order Macroscelidea
- Order Mesonychia † accepted as Mesonychia †
- Order Mesonychia †
- Order Mimotonida †
- Order Mixodontia †
- Order Notopterna † accepted as Litopterna †
- Order Notoungulata †
- Order Pantodonta † accepted as Cimolesta †
- Order Pantolesta † accepted as Cimolesta †
- Order Perissodactyla
- Order Pholidota
- Order Pilosa
- Order Primates
- Order Proboscidea
- Order Procreodi †
- Order Proteutheria † accepted as Eutheria
- Order Ptolemaiida †
- Order Pyrotheria †
- Order Rodentia
- Order Scandentia
- Order Simplicidentata incertae sedis †
- Order Sirenia
- Order Soricomorpha
- Order Taeniodonta † accepted as Cimolesta †
- Order Tillodontia † accepted as Cimolesta †
- Order Tubulidentata
- Order Xenungulata †
- Family Acreodi incertae sedis †
- Family Endotheriidae Shikama, 1947 †
- Family Heterosoricidae Viret & Zapfe, 1951 †
- Family Horolodectidae Scott, 2019 †
- Family Miacidae Cope, 1880 †
- Family Nesophontidae
- Family Ocepeiidae Gheerbrant in Gheerbrant et al., 2014 †
- Family Otlestidae Nessov, 1985 † accepted as Eutheria
- Family Soricomorpha incertae sedis
- Family Sororyctidae Gingerich, Arif, Hussain & Abbas, 1998 †
- Family Tenrecoidea incertae sedis
- Family Tenrecomorpha incertae sedis
- Family Vastanidae Bajpai, Kapur, Das, Tiwari, Saravanan & Sharma, 2005 †
- Family Zhelestidae Nessov, 1990 †
- Genus Acristatherium Hu, Meng, Li & Wang, 2010 †
- Genus Adrastotherium Ameghino, 1887 †
- Genus Akenodon Aymard, 1856 †
- Genus Bayshinoryctes Lopatin & Averianov, 2023 †
- Genus Beleutinus Bazhanov, 1972 †
- Genus Bobolestes Nessov, 1985 †
- Genus Ceruttia Tomiya, 2013 †
- Genus Cokotherium Wang, Hoffmann, Wang & Wang, 2022 †
- Genus Dehnaripus Abbassi, Salehi Tinooni, Ghorbani Dehnavi, Shakeri & Eshaghi, 2024 †
- Genus Durlstodon Sweetman, Smith & Martill, 2017 †
- Genus Durlstotherium Sweetman, Smith & Martill, 2017 †
- Genus Eutrochodon Roth, 1903 †
- Genus Ganungulatum Ting, Meng, Li, Wang, Tong, Schiebout, Koch, Clyde & Bowen, 2007 †
- Genus Hyotheridium Gregory & Simpson, 1926 †
- Genus Idiogenomys Ostrander, 1983 †
- Genus Indoclemensia Wilson Mantilla et al., 2022 †
- Genus Juramaia Luo, Yuan, Meng & Ji, 2011 †
- Genus Microtherulum Wang & Wang, 2023 †
- Genus Montanalestes Cifelli, 1999 †
- Genus Moropopus Abbassi, Salehi Tinooni, Ghorbani Dehnavi, Shakeri & Eshaghi, 2024 †
- Genus Murtoilestes Averianov & Skutschus, 2001 †
- Genus Ndamathaia Jacobs, Anyonge & Barry, 1987 †
- Genus Nosella Peláez-Campomanes in Lopez-Martinez & Pelaez-Campomanes, 1999 †
- Genus Obtususdon Xu, 1977 †
- Genus Otlestes Nessov, 1985 † accepted as Bobolestes Nessov, 1985 †
- Genus Pahelia Zack, Rose, Holbrook, Kumar, Rana & Smith, 2021 †
- Genus Prokennalestes Kielan-Jaworowska & Dashzeveg, 1989 †
- Genus Prozalambdalestes Trofimov in Belyaeva, Trofimov & Reshetov, 1974 † accepted as Prokennalestes Kielan-Jaworowska & Dashzeveg, 1989 †
- Genus Radinskya McKenna, Minchen, Ting & Luo, 1989 †
- Genus Sazlestes Nessov, 1997 †
- Genus Sinomylus McKenna & Meng, 2001 †
- Genus Talquinodus Kramarz, Bellosi, Bond, Forasiepi, Gaillard & Krause, 2024 †
- Genus Thoracotherion Gray, 1869 †
- Genus Veratalpa Ameghino, 1905 †
- Genus Walshius Tomiya, 2013 †
- Genus Wania Wang, 1995 †
- Genus Wanotherium Tang & Yan, 1976 †
- Infraclass Marsupialia accepted as Metatheria
- Infraclass Metatheria
- Infraclass Placentalia accepted as Eutheria
- Order Dryolestida †
- Order Eupantotheria † accepted as Dryolestida †
- Order Spalacotherioidea † accepted as Symmetrodonta †
- Order Symmetrodonta †
- Order Uranotheria accepted as Eutheria
- Family Holoclemensiidae Aplin & Archer, 1987 †
- Family Kermackiidae Butler, 1978 †
- Family Picopsidae Fox, 1980 †
- Family Plicatodontidae Ameghino, 1904 †
- Family Potamotelsidae Nessov, 1987 †
- Genus Anisorhizus Ameghino, 1902 †
- Genus Chunnelodon Ensom & Sigogneau-Russell, 1998 †
- Genus Dakotadens Eaton, 1993 †
- Genus Magnimus Sigogneau-Russell, 1999 †
- Genus Minimus Sigogneau-Russell, 1999 †
- Genus Paleomolops Cifelli, 1994 †
- Genus Patagomaia Chimento, Agnolín, García-Marsà, Manabe, Tsuihiji & Novas, 2024 †
- Subclass Theriiformes †
- Order Mammalia (awaiting allocation)
- Order Mammalia incertae sedis
- Family Meridiolestida incertae sedis †
- Genus Bulatia Gabunia & Shevyreva, 1994 †
- Genus Eomaia Ji, Luo, Yuan, Wible, Zhang & Georgi, 2002 †
- Genus Florentinoameghinia Simpson, 1932 †
- Genus Hypomylos Sigogneau-Russell, 1992 †
- Genus Tribotherium Sigogneau-Russell, 1991 †
- Genus Zygiocuspis Cifelli, 1990 †
- Class Mammaliaformes incertae sedis †
- Class Reptilia
- Genus Archaeoraptor Sloan, 1999 †
- Genus Brittagnathus Ahlberg & Clack, 2020 †
- Genus Diploradus Clack & Smithson in Clack et al., 2017 †
- Genus Mesanerpeton Smithson & Clack, 2018 †
- Genus Ossirarus Clack & Smithson in Clack et al., 2017 †
- Genus Parmastega Beznosov, Clack, Lukševičs, Ruta & Ahlberg, 2019 †
- Genus Perittodus Clack & Smithson in Clack et al., 2017 †
- Genus Sigournea Bolt & Lombard, 2006 †
- Genus Tantallognathus Chen, Alavi, Brazeau, Blom, Millward & Ahlberg, 2017 †
- Genus Tutusius Gess & Ahlberg, 2018 †
- Genus Umzantsia Gess & Ahlberg, 2018 †
- Class Acanthodii †
- Class Actinopterygii
- Class Agnatha (awaiting allocation)
- Class Cephalaspidomorphi
- Class Chondrichthyes
- Class Conodonta †
- Class Dipnoi
- Class Dipnomorpha accepted as Dipnoi
- Class Galeaspida †
- Class Gnathostomata incertae sedis †
- Class Myxini
- Class Osteichthyes (awaiting allocation)
- Class Osteichthyes incertae sedis †
- Class Ostracodermi †
- Class Pisces (awaiting allocation)
- Class Placodermi †
- Class Pteraspidomorphi †
- Class Sarcopterygii
- Class Thelodonti †
- Genus Emmonsaspis Resser & Howell, 1938 †
- Genus Harajicadectes Choo, Holland, Clement, King, Challands, Young & Long, 2024 †
- Genus Kahamachli Malkani, 2019 †
- Genus Nuucichthys Lerosey-Aubril & Ortega-Hernández, 2024 †
- Genus Rhynchocopros Hunt, Lucas & Spielmann, 2013 †
- Genus Santamariacopros Hunt, Lucas & Spielmann, 2013 †
- Genus Squirmarius McCoy, Wittry, Sadabadi & Mayer, 2023 †
- Class Chordata (awaiting allocation)
- Class Eotetrapodiformes incertae sedis
- 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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