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
- 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
- Class Calyptoptomatida †
- Class Camerothecida
- Class Cephalopoda
- Order Actinocerida †
- Order Agoniatitida †
- Order Ammonitida †
- Family Acanthoceratidae Hyatt, 1900 †
- Family Acanthopleuroceratidae Arkell, 1950 † accepted as Polymorphitidae Haug, 1887 †
- Family Acrioceratidae Vermeulen, 2004 †
- Family Aegocrioceratidae †
- Family Aequilobidae Bilotta, 2010 †
- Family Amaltheidae Hyatt, 1867 † accepted as Hipponicidae Troschel, 1861
- Family Ammonitida (awaiting allocation) †
- Family Ammonitida incertae sedis †
- Family Ammonoidea (awaiting allocation) †
- Family Anahamulinidae Breistroffer, 1952 †
- Family Ancyloceratidae Gill, 1871 †
- Family Anisoceratidae Hyatt, 1990 †
- Family Aptychi (awaiting allocation) †
- Family Arietitidae Hyatt, 1875 †
- Family Aspidoceratidae Zittel, 1895 †
- Family Astiericeratidae Breistroffer, 1953 †
- Family Ataxioceratidae Buckman, 1921 †
- Family Aulacostephanidae Spath, 1924 †
- Family Baculitidae Gill, 1871 †
- Family Berriasellidae Spath, 1922 †
- Family Binneyitidae †
- Family Bochianitidae Spath, 1922 †
- Family Brancoceratidae Spath, 1933 †
- Family Buchitidae †
- Family Cardioceratidae Siemiradzki, 1891 †
- Family Ceratitina incertae sedis †
- Family Cicatritidae Spath, 1927 †
- Family Clistoceratidae Ruzhencev, 1975 †
- Family Clydinceratidae †
- Family Coeloceratidae Haug, 1910 †
- Family Coilopoceratidae Hyatt, 1903 †
- Family Collignoniceratidae Wright & Wright, 1951 †
- Family Craspeditidae Spath, 1924 †
- Family Cravenoceratidae Ruzhentsev, 1957 †
- Family Crioceratitidae Wright, 1952 †
- Family Cycloceltitidae Tozer, 1979 †
- Family Cymbitidae Buckman, 1919 †
- Family Dactylioceratidae Hyatt, 1867 †
- Family Decoritidae Ruzhencev & Bogoslovskaya, 1975 †
- Family Derolytoceratidae Spath, 1927 †
- Family Deshayesitidae Stoyanow, 1949 †
- Family Desmoceratidae Zittel, 1895 †
- Family Dieneroceratidae Kummel, 1952 †
- Family Diplomoceratidae Spath, 1926 †
- Family Dipoloceratidae Spath, 1921 †
- Family Dorsoplanitidae Arkell, 1950 †
- Family Douvilleiceratidae Parona & Bonarelli, 1897 †
- Family Echioceratidae Buckman, 1913 †
- Family Ectocentritidae Spath, 1926 †
- Family Emericiceratidae Vermeulen, 2004 †
- Family Engonoceratidae Hyatt, 1900 †
- Family Eoderoceratidae Spath, 1929 †
- Family Eoderoceratoidea incertae sedis †
- Family Eodesmoceratidae Wright, 1955 †
- Family Eosagenitidae Tozer, 1994 †
- Family Episageceratidae Ruzhencev, 1956 †
- Family Ferganoceratidae Ruzhencev, 1960 †
- Family Flickiidae Adkins, 1928 †
- Family Forbesiceratidae Wright, 1952 †
- Family Gattendorfiidae Bartzsch & Weyer, 1987 †
- Family Glaphyritidae Ruzhentsev & Bogoslovskaya, 1971 †
- Family Graphoceratidae Buckman, 1905 †
- Family Gyronitidae Waagen, 1895 †
- Family Hamitidae Gill, 1871 †
- Family Hammatoceratidae †
- Family Hamulinidae †
- Family Haploceratidae Zittel, 1884 †
- Family Helicancylidae Hyatt, 1894 †
- Family Hemihoplitidae Spath, 1924 †
- Family Heteroceratidae Spath, 1922 †
- Family Hildoceratidae Hyatt, 1867 †
- Family Himalayitidae Spath, 1925 †
- Family Himantoceratidae †
- Family Hoeveliidae Korn & Price, 2019 †
- Family Holcodiscidae Spath, 1924 †
- Family Hoplitidae Douvillé, 1890 †
- Family Huananoceratidae Zhao et al., 1978 †
- Family Hungaritidae Waagen, 1895 †
- Family Intoceratidae Kusina, 1971 †
- Family Inyoitidae Spath, 1934 †
- Family Kirsoceratidae Korn, 2002 †
- Family Kosmoceratidae Haug, 1887 †
- Family Kossmaticeratidae Spath, 1922 †
- Family Lamellaptychidae Mechova, Vašícek & Houša, 2010 †
- Family Latanarcestidae Korn, 2001 †
- Family Lenicostitidae Bert, Bersac & Canut, 2019 †
- Family Lenticeratidae †
- Family Leptoceratoididae †
- Family Leymeriellidae Breistroffer, 1951 †
- Family Libycoceratidae Zaborski, 1982 †
- Family Liparoceratidae Hyatt, 1867 †
- Family Lissoceratidae Douvillé, 1885 †
- Family Liuchengoceratidae Zhao et al., 1978 †
- Family Lyelliceratidae Spath, 1921 †
- Family Lytoceratidae Neumayr, 1875 †
- Family Macrocephalitidae †
- Family Macroscaphidae †
- Family Macroscaphitidae Hyatt, 1900 †
- Family Maxigoniatitidae Korn et al., 1999 †
- Family Megacrioceratidae †
- Family Melagathiceratidae Tozer, 1971 †
- Family Mojsisovicsiidae Hyatt, 1903 †
- Family Mongoloceratidae Ruzhencev & Bogoslovskaya, 1978 †
- Family Monoditidae Bert, 2009 †
- Family Morphoceratidae Hyatt, 1900 †
- Family Muniericeratidae Wright, 1952 †
- Family Nannolytoceratidae Spath, 1927 †
- Family Nathorstitidae Spath, 1951 †
- Family Neocomitidae Salfeld, 1921 †
- Family Neostacheoceratidae Toumansky, 1939 †
- Family Nostoceratidae Hyatt, 1894 †
- Family Oecoptychiidae †
- Family Olcostephanidae Pavlow, 1892 †
- Family Oosterellidae Breistroffer, 1940 †
- Family Ophioceratidae Arthaber †
- Family Oppeliidae Douvillé, 1890 †
- Family Otoitidae Mascke, 1907 †
- Family Oxynoticeratidae Hyatt, 1875 †
- Family Pachyceratidae Buckman, 1918 †
- Family Pachydiscidae Spath, 1922 †
- Family Paraceltitidae Tozer, 1981 †
- Family Paracrioceratidae Bert & Bersac, 2014 †
- Family Parahoplitidae Spath, 1922 †
- Family Paranoritidae Spath, 1930 †
- Family Parkinsoniidae †
- Family Parodoceratidae Petter, 1959 †
- Family Perisphinctidae Steinmann, 1890 †
- Family Perisphinctoidea incertae sedis †
- Family Phlycticrioceratidae Spath, 1926 †
- Family Phricodoceratidae Spath, 1938 †
- Family Phymatoceratidae Hyatt, 1867 †
- Family Placenticeratidae Hyatt, 1900 †
- Family Platylenticeratidae Casey, 1973 †
- Family Pleuroacanthitidae Hyatt, 1900 †
- Family Pleuronodoceratidae Zhao et al., 1978 †
- Family Polymorphitidae Haug, 1887 †
- Family Polyptychitidae †
- Family Prionitidae Hyatt, 1900 †
- Family Prolyelliceratidae Latil, Robert & Bulot, 2009 †
- Family Propinacoceratidae Plummer & Scott, 1937 †
- Family Protancyloceratidae †
- Family Protetragonitidae Spath, 1923 †
- Family Pseudotissotiidae †
- Family Psiloceratidae Hyatt, 1867 †
- Family Ptychoceratidae Meek, 1876 †
- Family Pulchelliidae Hyatt, 1903 †
- Family Punctaptychidae Mechova, Vašícek & Houša, 2010 †
- Family Reineckeiidae Hyatt, 1900 †
- Family Riasanitidae Frau, Wimbledon, Ifrim, Bulot & Pohl, 2021 †
- Family Sagenitidae Spath, 1951 †
- Family Scaphitidae Meek, 1876 †
- Family Schloenbachiidae Parona & Bonarelli, 1897 †
- Family Schlotheimiidae Spath, 1923 †
- Genus Schlotheimia Bayle, 1878 †
- Species Schlotheimia angulata (Schlotheim, 1820) †
- Species Schlotheimia angulatus (Schlotheim, 1820) †
- Genus Schlotheimia Eudes-Deslongchamps, 1835 †
- Family Silesitidae Hyatt, 1900 †
- Family Simoceratidae Spath, 1924 †
- Family Sinuiceratidae Venturi, Nannarone & Bilotta, 2005 †
- Family Somoholitidae Ruzhencev, 1938 †
- Family Sonneratiidae Destombes, Juignet & Rioult, 1973 †
- Family Sonniniidae Buckman, 1892 †
- Family Sphaeroceratidae Buckman, 1930 †
- Family Sphenodiscidae Hyatt, 1900 †
- Family Spiroceratidae Hyatt, 1900 †
- Family Spirolegoceratidae Nassichuk, 1970 †
- Family Spiticeratidae Spath, 1924 †
- Family Steinmannitidae Tozer, 1994 †
- Family Stenolaphyritidae Ruzhencev & Bogoslovskaya, 1971 †
- Family Stephanoceratidae Neumayr, 1875 †
- Family Strigoceratidae Buckman, 1924 †
- Family Surenitidae Ruzhencev & Bogoslovskaya, 1975 †
- Family Tapashanitidae Zhao et al., 1978 †
- Family Teicherticeratidae Bogoslovsky, 1969 †
- Family Temertassetiidae Korn, Bockwinkel & Ebbighausen, 2010 †
- Family Tetragonitidae Hyatt, 1900 †
- Family Thetiditidae Tozer, 1971 †
- Family Tissotiidae Hyatt, 1900 †
- Family Trochleiceratidae Breistroffer, 1952 †
- Family Tulitidae Buckman, 1921 †
- Family Turrilitidae Meek, 1876 †
- Family Uddenitidae Miller & Furnish, 1940 †
- Family Vascoceratidae Spath, 1925 †
- Family Virgatitidae Spath, 1923 †
- Family Werneroceratidae Erben, 1964 †
- Family Xenoceltitidae Spath, 1930 †
- Genus Ammonites Bruguière, 1789 †
- Genus Ammonites Gesner, 1758 †
- Genus Catalecanites Spath, 1934 †
- Genus Hammonites Herrmannsen, 1846 † accepted as Ammonites Gesner, 1758 †
- Order Ammonoidea † accepted as Ammonitida †
- Order Anarcestida †
- Order Ancyloceratida †
- Order Antarcticerida †
- Order Ascocerida †
- Order Aulacocerida †
- Order Bactritoidea (awaiting allocation) †
- Order Barrandeocerida †
- Order Bassleroceratida †
- Order Basslerocerida † accepted as Bassleroceratida †
- Order Belemnitida †
- Order Belemnoidea incertae sedis †
- Order Boletzkyida
- Order Cephalopoda (awaiting allocation)
- Order Cephalopoda incertae sedis
- Order Ceratitida †
- Order Clymeniida †
- Order Coleoidea (awaiting allocation)
- Order Coleoidea incertae sedis
- Order Colorthocerida †
- Order Decapoda accepted as Teuthoidea
- Order Diplobelida †
- Order Discosorida †
- Order Dissidocerida †
- Order Donovaniconida †
- Order Ellesmeroceratida † accepted as Ellesmerocerida †
- Order Ellesmerocerida †
- Order Endocerida †
- Order Goniatitida †
- Order Intejocerida †
- Order Lytoceratida †
- Order Meekoceratida †
- Order Mixosiphonata †
- Order Myopsida
- Order Nautilida
- Order Nautiloidea (awaiting allocation)
- Order Nautiloidea incertae sedis
- Order Octobrachia †
- Order Octopoda
- Order Oncocerida †
- Order Orthocerida †
- Order Otoceratida †
- Order Pallioceratida †
- Order Phragmoteuthida †
- Order Phylloceratida †
- Order Plectonocerida
- Order Plectronocerida † accepted as Ellesmerocerida †
- Order Prolecanitida †
- Order Protactinocerida †
- Order Pseudorthocerida †
- Order Psiloceratida †
- Order Sepiida
- Order Sepioidea
- Order Spirulida
- Order Tarphycerida †
- Order Teuthida
- Order Teuthoidea
- Order Vampyromorpha
- Order Xenodiscida †
- Order Yanhecerida †
- 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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