Period: 488 million to 444 million years ago.
†Eoneoprioniodus (Genus) Mound, 1965
Within limits:
†Distacodontina (Order)
Within limits:
Vertebrata (Subphylum) Cuvier, 1812 - vertebrates
Entire range:
†Ceratopsis (Genus) Ulrich, 1894
Lower limit:
Bairdia (Genus) McCoy, 1844
†Eurychilinidae (Family)
Myodocopida (Order) Sars, 1866
Platycopida (Order) Sars, 1866
Podocopida (Order) (Sars, 1866) G.W. Müller, 1894
Within limits:
Branchiopoda (Class) Latreille, 1817 - branchiopods
Cephalocarida (Class) H.L. Sanders, 1955 - cephalocarids
†Leperditicopida (Order) Scott, 1961
Malacostraca (Class) Latreille, 1802
Ostracoda (Class) Latreille, 1802 - ostracods
Phyllocarida (Subclass) Packard, 1879 - leptostracans
Upper limit:
†Agnostida (Order) Salter, 1864
Entire range:
†Opipeuter (Genus) Fortey, 1974
†Pseudogygites (Genus)
†Soomaspis (Genus) Fortey & Theron, 1995
†Tariccoia (Genus) Hammann et al., 1990
†Triarthrus (Genus) Green, 1832
†Trinodus (Genus) McCoy, 1846
Lower limit:
Xiphosura (Class) Latreille, 1802 - horseshoe crabs
Xiphosurida (Order) Latreille, 1802
Within limits:
Arthropoda (Phylum) Latreille, 1829 - arthropods
†Chasmataspidida (Order) Caster & Brooks, 1956
Chelicerata (Superclass)
†Naraoia (Genus) Walcott, 1912
†Naraoiidae (Family) Walcott, 1912
†Nektaspida (Order) Raymond, 1920 - nektaspids
Upper limit:
†Pinnocaris (Genus)
†Ribeiria (Genus)
Entire range:
†Actinoceras (Genus) Bronn, 1835
†Allopiloceras (Genus) Ulrich & Foerste, 1935
†Augustoceras (Genus)
†Bathmoceras (Genus) Barrande, 1868
†Bucania (Genus) Hall, 1847
†Cameroceras (Genus) Conrad, 1842
†Cassinoceras (Genus) Ulrich & Foerste, 1935
†Cotteroceras (Genus) Ulrich & Foerste, 1935
†Curtoceras (Genus) Ulrich, Foerste, Miller & Flower, 1942
†Cyrtogomphoceras (Genus) Foerste, 1924
†Cyrtolites (Genus)
†Endoceras (Genus) Hall, 1847
†Gonioceras (Genus) Hall, 1847
†Gorbyoceras (Genus) Shimizu & Obata, 1935
†Lenaella (Genus) Byalyi, 1973, nom. praeocc.
†Maclurites (Genus) Menke, 1830
†Murrayoceras (Genus) Foerste, 1926
†Nyuella (Genus) Rozov, 1975
†Piloceras (Genus) Salter, 1859
†Rhytiodentalium kentuckyensis Pojeta & Runnegar, 1979
†Richardsonoceras (Genus) Foerste, 1932
†Sinuites (Genus) Koken, 1896
†Westonoceras (Genus) Foerste, 1926
Lower limit:
†Cyclonema (Genus) Hall, 1851[1852]
†Mimospira (Genus) Perner, 1925
Within limits:
†Actinoceratoidea (Subclass)
Bivalvia (Class) C. Linnaeus, 1758 - bivalves
Cephalopoda (Class) Cuvier, 1797 - cephalopods
†Conocardioida (Order) Neumayr, 1891
†Cyrtonellida (Order)
†Endoceratoidea (Subclass)
Gastropoda (Class) Cuvier, 1795 - snails and slugs
†Hyolithida (Order) Matthew, 1899
Nautiloidea (Subclass) Agassiz, 1847
Nautilus (Genus) C. Linnaeus, 1758
†Onychochilina (Suborder)
†Ribeirioida (Order) Kobayashi, 1933
†Rostroconchia (Class) Pojeta et al., 1972
Within limits:
Polychaeta (Class) Grube, 1850 - polychaetes
Upper limit:
†Acrotheloidea (Superfamily)
†Billingsellida (Order)
†Billingsellidina (Suborder)
†Billingselloidea (Superfamily)
†Camaroidea (Order)
†Conchopeltida (Order)
†Hintzespongiidae (Family) Finks, 1983
†Hintzespongioidea (Suborder) Finks, 1983
†Leptomitidae (Family) de Laubenfels, 1955
†Paterinata (Class)
†Paterinida (Order)
†Paterinoidea (Superfamily)
†Protomedusae (Class)
†Siphonotretida (Order)
†Siphonotretidae (Family)
†Siphonotretoidea (Superfamily)
†Stolonoidea (Order)
Entire range:
†Adelograptus (Genus) Bulman, 1941
†Anisograptus (Genus) Ruedmann, 1937
†Arthroclema (Genus) Billings, 1862
†Arthrostyloecia (Genus) Bassler, 1952
†Bactrotheca (Genus) Novák, 1891
†Brachiospongia (Genus) Marsh, 1867
†Calycocoelia (Genus) Bassler, 1927
†Camarella (Genus) Dall, 1877
†Camellaspongia (Genus) Rigby & Bayer, 1971
†Cardiograptus (Genus) Harris, 1916
†Christiania (Genus) Hall & Clarke, 1892
†Christiania perrugata
†Christiania perrugata multiridgia Harper, 2005
†Clistotrema (Genus)
†Clitambonitidina (Suborder)
†Clitambonitoidea (Superfamily)
†Clonograptus (Genus) Lapworth, 1873
†Conotreta (Genus) Walcott, 1890
†Constellaria (Genus)
†Conularia triangulata (Raymond)
†Crepipora (Genus) Ulrich, 1882
†Cryptograptus (Genus) Lapworth, 1880
†Cyclospira (Genus) Hall & Clarke, 1894
†Cyclospira girvanensis
†Cyclospira girvanensis aequabilis Harper, 2005
†Desmohydra (Genus) Kozlowski, 1959
†Diaphelasma (Genus)
†Dicellograptus (Genus) Lapworth, 1873
†Dicellograptus complanatus
†Dicellograptus complanatus ornatus
†Didymograptus (Genus) Hall, 1865
†Didymograptus bifidus
†Didymograptus protobifidus
†Dierespongia (Genus) Rigby & Gutschick, 1976
†Dilytes (Genus) Marek, 1974
†Diplograptus (Genus) Hall, 1865
†Ephippelasma (Genus) Cooper, 1956
†Escharopora (Genus) Hall, 1847
†Eumorpholites (Genus) Marek, 1967
†Gacella (Genus) Williams, 1962
†Glossograptus (Genus) Hall, 1865
†Glyptograptus euglyphus
†Glyptograptus teretiusculus
†Gompholites (Genus) Marek, 1966
†Goniograptus (Genus) McCoy, 1876
†Graptodictya (Genus) Ulrich, 1882
†Hemiphragma (Genus) Ulrich, 1893
†Hesperorthis (Genus) Schuchert & Cooper, 1931
†Heterotrypa (Genus) Nicholson, 1879
†Isograptus victoriae
†Isorophus (Genus) Foerste, 1916
†Joachimilites (Genus) Marek, 1967
†Katastrophomena (Genus) Cocks, 1968
†Katastrophomena admiratio Harper, 2005
†Katastrophomena subg. Katastrophomena
†Kiaeromena (Genus) Spjeldnaes, 1957
†Kiaeromena serrata Harper, 2005
†Kiaeromena subg. Scotokiaeromena Harper, 2005
†Leptaena (Genus) Dalman, 1828
†Leptaena beta Harper, 2005
†Leptaena subg. Leptaena
†Leptellina (Genus) Ulrich & Cooper, 1936
†Meristoschisma (Genus) Sprinkle, 1973
†Multicostella (Genus) Schuchert & Cooper, 1931
†Nemagraptus (Genus) Hall, 1859
†Nemagraptus gracilis
†Nephrotheca (Genus) Marek, 1966
†Nevadocoelia (Genus) Bassler, 1927
†Nubialba (Genus) Neuman, 1994
†Nubialba mccorryae Harper, 2005
†Oncograptus (Genus) Hall, 1914
†Onniella (Genus) Bancroft, 1928
†Origostrophia (Genus) Mitchell, 1972
†Origostrophia mitchelli Harper, 2005
†Orthidium (Genus) Hall & Clarke, 1892
†Orthidium gambolovensis Egerquist & Holmer, 2006
†Orthidium lavensis Egerquist & Holmer, 2006
†Orthograptus (Genus) Lapworth, 1873
†Orthograptus quadrimucronatus
†Orthograptus truncatus
†Orthograptus truncatus intermedius (Elles)
†Palaeocarrickella (Genus) Harper, 2005
†Paraglossograptus (Genus) Hsü, 1959
†Paraglossograptus etheridgei
†Parvohallopora (Genus) Singh, 1979
†Phyllograptus (Genus) Hall, 1858
†Plaesiomys subg. Dinorthis Kobayashi, 1937
†Polytoechioidea (Superfamily)
†Pseudoclimacograptus (Genus) Pribyl, 1948
†Quadrotheca (Genus) Sysoev, 1957
†Ranorthis (Genus) Öpik, 1939
†Ranorthis rotunda Egerquist & Holmer, 2006
†Rhombotrypa (Genus) Ulrich & Bassler, 1904
†Rhysotreta (Genus) Cooper, 1956
†Rostricellula fulva Harper, 2005
†Schmidtites (Genus) Schuchert & Le Vene, 1929
†Skenidioides (Genus) Schuchert & Cooper, 1931
†Skenidioides minutus Egerquist & Holmer, 2006
†Sowerbyella (Genus) Jones, 1928
†Spinilingula (Genus) Cooper, 1956
†Stictopora (Genus) Hall, 1847
†Streptosolenidae (Family) Johns, 1994
†Strophomena (Genus)
†Taeniaster (Genus) Billings, 1858
†Tetragraptus (Genus) Hall, 1865
†Tetragraptus approximatus
†Tetragraptus fruiticosus
†Tetragraptus fruticosus
†Torynelasma (Genus) Cooper, 1956
†Tritoechia (Genus) Ulrich & Cooper, 1936
†Zittelella (Genus) Ulrich & Everett, 1889
†Zygospira (Genus) Hall, 1862
Lower limit:
Amphidiscosida (Order) Schrammen
†Astylospongiidae (Family) Rauff, 1893
†Brachiospongiidae (Family) Beecher, 1889
†Chiastoclonellidae (Family) de Laubenfels, 1955
†Climacograptus (Genus)
†Cnemidiastridae (Family) Schrammen, 1936
†Conulariida (Order) Miller & Gurley, 1896
Craniidae (Family) Menke, 1828
†Dictyospongiidae (Family) Hall, 1882
†Dictyospongioidea (Suborder) Hall & Clarke, 1899
Discinidae (Family)
†Eurypterida (Order) Burmeister, 1843 - eurypterids
†Glyptograptus (Genus) Lapworth, 1873
†Glyptorthis (Genus) Foerste, 1912
†Graptoloidea (Order)
Hemichordata (Phylum) (Bateson, 1885) auct. - hemichordates
Hexasterophora (Subclass) F.E. von Schulze, 1887
Lyssacinosida (Order) (Zittel, 1877) W.D. Hartman, in S.P. Parker, 1982
†Platystrophia (Genus) King, 1850
†Rostricellula (Genus) Ulrich & Cooper, 1942
†Sphaerocladina (Suborder) Schrammen, 1910
†Stromatopora (Genus) Goldfuss, 1826
Tetracladina (Suborder) Zittel, 1878
Within limits:
Acrotretida (Order) Kuhn, 1949
†Acrotretoidea (Superfamily)
Amphidiscophora (Subclass) F.E. von Schulze, 1887
Annelida (Phylum) Lamarck, 1809 - segmented worms
†Anthaspidellidae (Family) Miller, 1889
Anthozoa (Class) Ehrenberg, 1831
†Astraeospongiidae (Family) de Laubenfels, 1955
Brachiopoda (Phylum) Duméril, 1806 - brachiopods
Calcarea (Class) Bowerbank, 1864 - calcareous sponges
Ceractinomorpha (Subclass) Lévi, 1973
†Chileata (Class)
†Choiidae (Family) de Laubenfels, 1955
Clionaidae (Family) d'Orbigny, 1851
Cnidaria (Phylum) Hatschek, 1888 - cnidarians
†Conulata (Class) Moore & Harrington, 1956
Craniata (Class) Williams, Carlson, Brunton, Holmer & Popov, 1996
Craniiformea (Subphylum) Popov, Bassett, Holmer & Laurie, 1993
†Craniopsida (Order) Gorjansky & Popov, 1985
†Craniopsidae (Family) Williams, 1963
†Craniopsoidea (Superfamily) Williams, 1963
Crinoidea (Class) - sea lilies and feather stars
Ctenophora (Phylum) Eschscholtz, 1829 - comb jellies
†Dalmanellidina (Suborder)
Demospongiae (Class) Sollas, 1875 - demosponges
†Dendroidea (Order)
†Dierespongioidea (Suborder) Rigby, 1976
Echinodermata (Phylum) Klein, 1734 ex De Brugière, 1789 - echinoderms
Ectoprocta (Phylum) Nitsche, 1870 - ectoprocts
†Edrioasteroidea (Class)
†Eocrinoidea (Class)
†Graptolithina (Class)
Hadromerida (Order) Topsent, 1898
†Heteractinida (Order) Hinde, 1888
Hexactinellida (Class) O. Schmidt, 1870 - hexactinellids
Holothuroidea (Class) - sea cucumbers
†Homalozoa (Subphylum) Whitehouse, 1941
†Homoiostelea (Class)
Hydrozoa (Class) Owen, 1843
†Hyolithes (Genus) Eichwald, 1840
Lingulata (Class)
Lingulida (Order) Waagen, 1885
Linguliformea (Subphylum)
Linguloidea (Superfamily) Menke, 1828
Lithistida (Order) Schmidt, 1870 - lithistids
†Lobopodia (Phylum) Snodgrass, 1938 - lobopodians
Mollusca (Phylum) Linnaeus, 1758 - molluscs
Monoplacophora (Class) Odhner, 1940 - monoplacophorans
†Obolidae (Family)
†Orchocladina (Suborder) Rauff, 1893
†Orthida (Order) Schuchert & Cooper, 1932
†Orthidina (Suborder)
†Orthoidea (Superfamily)
†Orthotheca (Genus)
†Orthothecida (Order) Marek, 1966
†Pentamerida (Order)
†Piraniidae (Family) de Laubenfels, 1955
†Plectorthoidea (Superfamily)
Polyplacophora (Class) Blainville, 1816 - chitons
†Porambonitoidea (Superfamily)
Porifera (Phylum) Grant, in Todd, 1836 - sponges
†Procoelomata (Phylum) Bergström, 1989
†Protorthida (Order)
†Protospongiidae (Family) Hinde, 1887
†Protospongioidea (Suborder) Finks, 1960
Pterobranchia (Class) - pterobranchs
Pycnogonida (Class) Latreille, 1810 - pycnogonids
†Reticulosa (Order) Reid, 1958
†Rhizomorina (Suborder) Zittel, 1878
Rhynchonellata (Class)
Rhynchonelliformea (Subphylum)
Scyphozoa (Class) - jellyfish
†Sphinctozoa (Order)
†Strophomenata (Class)
†Stylophora (Class) - stylophorans
†Syntrophiidina (Suborder)
†Tabulata (Order)
Tetractinomorpha (Subclass) Lévi
†Tuboidea (Order)
Verongida (Order) Bergquist
Zoantharia (Subclass)
Within limits:
Chordata (Phylum) Bateson, 1885 - chordates
Entire range:
†Baltisphaeridium longispinosum (Eisenack, 1931)
†Leiofusa fusiformis (Eisenack, 1934)
†Leiosphaerdia baltica A. Eisenack, 1958
Lower limit:
†Baltisphaeridium (Genus) Eisenack, 1958 ex Eisenack, 1959
†Cymatiosphaera multisepta Deunff, 1955
Dasycladaceae (Family) Kützing, 1843
Dasycladales (Order) Pascher, 1931
†Dorsennidium (Genus) Wicander, 1974
†Dorsennidium europaeum (Stockmans & Willière, 1960) Sarjeant & Stancliffe, 1994
†Dorsennidium europaeum subsp. europaeum (Stockmans & Willière, 1960) Sarjeant & Stancliffe, 1994
†Dorsennidium europaeum subsp. wenlockianum (Downie, 1959 ex Wall & Downie, 1963) Sarjeant & Stancliffe, 1994
†Leiofusa (Genus) Eisenack, 1938
Entire range:
†Clavachmna (Genus) Taugourdeau, 1966
†Cutichitina (Genus) Achab et al., 1993
†Cutichitininae (Subfamily) Achab et al., 1993
†Laufeldochitina (Genus) Paris, 1981
†Rhabdochitina (Genus) Eisenack, 1931
Lower limit:
†Bursachitina (Genus) Taugourdeau, 1966
†Calpichitina (Genus) Wilson & Hedlund, 1964
†Conochitina (Genus) Eisenack, 1931
†Conochitininae (Subfamily) (Eisenack, 1931) Paris, 1981
†Cyathochitina (Genus) Eisenack,1955
†Euconochitina (Genus) Taugourdeau, 1966
Spirotrichea (Class) Bütschli, 1889
†Tanuchitina (Genus) Jansonius, 1964
†Tanuchitininae (Subfamily) Paris, 1981
Within limits:
†Acritarcha Evitt, 1963 - acritarchs
Foraminifera (Class) Lee, 1990
Paleodictyon (Genus) Menghini, 1850
Polycystinea (Class) - polycystines
Lower limit:
Fungi (Kingdom) T.L. Jahn & F.F. Jahn, 1949 ex R.T. Moore, 1980 - fungi
Within limits:
Animalia (Kingdom) Linnaeus, 1758 - animals
Eukaryota (Domain) Chatton, 1925 - eukaryotes
Within limits:
Cyanobacteria (Phylum) Stanier, 1974 ex Cavalier-Smith, 2002 - cyanobacteria
Within limits:
Biota
Within limits:
Aldan Shield
Anabar Shield
Arabian-Nubian Shield
Baikal Fold Belt
Baltic Shield
Cameroon N'tem Complex
Central Africa Craton
Chaillu Craton
Committee Bay Block
Congo Craton
Ethiopian Block
†Gondwana E. Suess, 1861
Greenland Shield
Guapore Craton
Guiana Shield
†Iapetus Ocean
Indian Shield
Kaapvaal Craton
Kaminak Group
Kasaï Craton
†Khanty Ocean
Labrador Shield
†Laurentia
Litchfield Complex
Luis Alves Massif
Madagascar Craton
Man Shield
Nanambu Complex
Napier Complex
Pilbara Block
†Proto-Tethys Ocean
Reguibat Shield
Rio de la Plata Craton
Rio de la Plata Massif
Rul Jungle Complex
São Francisco Craton
Sayan Fold Belt
Scottish Shield
Sebakwe Proto-Craton
Slave Craton
Slave Province
Superior Craton
Superior Province
Tanzanian Craton
Tarim Craton
Tuareg Shield
Ukrainian Shield
West African Craton
Wyoming Province
Yangtze Craton
Yienisei Fold Belt
Yilgarn Block
Zambian Block
Zimbabwe Craton
http://www.palaeos.com/Paleozoic/Ordovician/Ordovician.htm