Genus | Authors | Year | Status | Age | Location | Notes |
Acanthaspis[1] | Newberry | 1875 | Valid | | | Preoccupied by hemiptere genus Acanthaspis Amyot & Serville, 1843, valid species synonymized with Kujdanowiaspis |
Acantholepis[1] | Krøyer | 1846 | Valid. | | | |
Acantholepis | Newberry | 1875 | Preocc. | | | Preoccupied by Acantholepis Krøyer, 1846 |
Actinolepis[1] | Agassiz | 1845 | Valid. | | | |
Aethaspis[1] | Denison | 1958 | Valid. | | | |
Africanaspis | Long Anderson Gess Hiller | 1997 | Valid. | | | |
Aggeraspis[1] | Gross | 1962 | Valid. | | | |
Ailuracantha[1] | White | 1969 | Valid. | | | |
Aleosteus[1] | Johnson Elliott Wittke | 2000 | Valid. | | | |
Anarthraspis[1] | Bryant | 1934 | Valid. | | | |
Angarichthys[1] | Obruchev | 1927 | Valid. | | | |
Antarctaspis[1] | White | 1968 | Valid. | | | |
Antarctolepis | White | 1968 | Valid. | | | |
Antineosteus | Lelièvre | 1984 | Valid. | | | |
Arctaspis[1] | Heintz | 1929 | Valid. | | | |
Arctolepis[1] | Eastman | 1908 | Valid. | | | |
Arctonema | Orvig | 1969 | Valid. | | | |
Arenipiscis | Young | 1981 | Valid. | | | |
Asiacanthus[1] | Liu | 1948 | Valid. | | | Placodermi incertae sedis |
Aspidichthys | Newberry | 1873 | Valid. | | | Arthrodire incertae sedis |
Asterolepis | Eichwald | 1840 | Valid. | | | |
Asterosteus | Newberry | 1875 | Valid. | | | |
Atlantidosteus | Lelièvre | 1984 | Valid. | | | |
Austrophyllolepis[1] | Long | 1984 | Valid. | | | |
Austroptyctodus[1] | Lelièvre | 1984 | Valid. | | | |
Baringaspis[1] | Miles | 1973 | Valid. | | | |
Batteraspis[1] | Pageau | 1969 | Valid. | | | |
Belemnacanthus | Eastman | 1898 | Valid. | | | |
Belgiosteus[1] | Lehman | 1973 | Valid. | | | |
Belosteus | Jaekel | 1927 | Valid. | | | |
Bimbianga[2] | Young | 2005 | Valid. | | | |
Bolivosteus | Goujet Janvier Suarez-Riglos | 1985 | Valid. | | | |
Bollandaspis[1] | Schultze | 1976 | Valid. | | | |
Boomeraspis[1] | Long | 1995 | Valid. | | | |
Bothriolepis[3] | Eichwald | 1840 | Valid. | | | |
Brachydeirus | Koenen | 1880 | Valid. | | | |
Brachygnathus[1] | Agassiz | 1844 | Valid. | | | |
Brachygnathus | Hussakof | 1909 | Preocc. | | | Preoccupied by placoderm genus Brachygnathus Agassiz, 1844 |
Brachyosteus | Jaekel | 1927 | Valid. | | | |
Braunosteus | Stensiö | 1959 | Valid. | | | |
Breizosteus | Goujet | 1980 | Valid. | | | |
Brindabellaspis | Young | 1980 | Valid. | | | |
Brontichthys[1] | Claypole | 1894 | Invalid. | | | Junior synonym of Titanichthys |
Bruntonichthys | Dennis Miles | 1980 | Valid. | | | |
Bryantaspis[1] | White Moy-Thomas | 1940 | Valid. | | | Replacement name for Cryptaspis Bryant, 1934 |
Bryantolepis[1] | Denison | 1958 | Valid. | | | |
Buchanosteus | Stensiö | 1945 | Valid. | | | |
Bullerichthys | Dennis Miles | 1980 | Valid. | | | |
Bungartius | Dunkle | 1947 | Valid. | | | |
Burrinjucosteus | | | Valid. | | | |
Callognathus | Newberry | 1890 | Valid. | | | |
Campbellodus | Miles Young | 1977 | Valid. | | | |
Camuropiscis | Dennis Miles | 1979 | Valid. | | | |
Carolowilhelmina | Mark-Kurik Carls | 2002 | Valid. | | | |
Cartieraspis[1] | Pageau | 1969 | Valid. | | | |
Cathlesichthys[1] | Young | 2004 | Valid. | | | |
Ceraspis | Schultze | 1887 | Preocc. | | | Preoccupied by coleoptere genus Ceraspis Lepeletier & Serville, 1825 |
Ceratolepichthys | Whitley | 1940 | Valid. | | | Replacement name for Ceratolepis Gross, 1933 |
Ceratolepis | Gross | 1933 | Preocc. | | | Preoccupied by coleoptere genus Ceratolepis Chapuis, 1873 |
Changyonophyton[1] | | | Valid. | | | |
Cheliophorus[1] | | | Lapsus calami. | | | Misspelling of Chelyophorus |
Chelyophorus | Agassiz | 1844 | Valid. | | | |
Chuchinolepis | Chang | 1978 | Valid. | | | |
Clarkeosteus[1] | Obruchev | 1964 | Valid. | | | |
Cobandrahlepis[1] | Young | 2005 | Valid. | | | |
Coccosteus[1] | Miller | 1841 | Valid. | | | |
Coelosteichthys[1] | Whitley | 1940 | Valid. | | | Replacement name for Coelosteus Gross, 1930 |
Coelosteus | Gross | 1930 | Preocc. | | | Preoccupied by fish genus Coelosteus Newberry, 1887 |
Compagopiscis | Gardiner & Miles | 1994 | Valid. | | | |
Companognathus | | | Valid. | | | |
Cosmacanthus | Agassiz | 1845 | Valid. | | | |
Cryptaspidisca | Strand | 1942 | Syn. | | | Replacement name for Cryptaspis Bryant, 1934 |
Cryptaspis | Bryant | 1934 | Preocc. | | | Preoccupied by coleoptere genus Cryptaspis Pascoe, 1842 |
Ctenurella | Orvig | 1960 | Valid. | | | |
Cyrtosteus | Gross | 1932 | Valid. | | | |
Deinodus[1] | Hussakof Bryant | 1919 | Valid. | | | |
Deirosteus | Wells | 1942 | Valid. | | | |
Denisonodus | Johnson Elliott | 1996 | Valid. | | | |
Desmoporella | Orvig | 1971 | Valid. | | | |
Destnoporella[1] | | | Valid. | | | |
Deveonema | Kulczycki | 1957 | Valid. | | | |
Dhanguura[1] | Young | 2004 | Valid. | | | |
Diandongpetalichthys | Pan Wang | 1978 | Valid. | | | |
Diadsomaspis[1] | Gross | 1937 | Valid. | | | |
Dicksonosteus[1] | Goujet | 1975 | Valid. | | | |
Dinichthys | Newberry | 1873 | Originally regarded as a synonym for Dunkleosteus, now according to Carr and Hlavin 2010, it is a distinct genus.[4] | | | |
Dinomylostoma | Eastman | 1906 | Valid. | | | |
Diplognathus | Newberry | 1878 | Valid. | | | |
Dobrowlania | Stensiö | 1944 | Valid. | | | |
Dunkleosteus | Lehman | 1956 | Valid. | | | |
Eastmanosteus | Obruchev | 1964 | Valid. | | | |
Eczematolepis | Miller | 1892 | Valid. | | | Replacement name for Acantholepis Newberry, 1875 |
Eldenosteus | Miles | 1964 | Valid. | | | |
Elegantaspis[1] | Heintz | 1929 | Valid. | | | |
Ellopetalichthys | Ørvig | 1957 | Valid. | | | |
Enseosteus | Jaekel | 1919 | Valid. | | | |
Entelognathus | Zhu et al | 2013 | Valid. | | | Placodermi incertae sedis |
Epipetalichthys | Stensiö | 1925 | Valid. | | | |
Erikaspis | Dupret Goujet Mark-Kurik | 2007 | Valid. | | | |
Errolosteus | Young | 1981 | Valid. | | | |
Erromenosteus | Jaekel | 1919 | Valid. | | | |
Eskimaspis | Dineley Liu Yuhai | 1984 | Valid. | | | |
Euleptaspis[1] | White Moy-Thomas | 1940 | Valid. | | | |
Euptychaspis | White Moy-Thomas | 1941 | Preocc. | | | Replacement name for Ptychaspis Bryant, 1935. Preoccupied by trilobite genus Euptychaspis Ulrich, 1931 |
Euryaspidichthys[1] | Whitley | 1950 | Valid. | | | Replacement name for Euryaspis Bryant, 1932 |
Euraspis[1] | Liu | 1991 | Valid. | | | |
Euryaspis | Bryant | 1932 | Preocc. | | | Preoccupied by coleoptere genus Euryaspis Blanchard, 1851 |
Eurycaraspis | Li | 1991 | Valid. | | | |
Fallacosteus | Long | 1990 | Valid. | | | |
Gaspeaspis[1] | Pageau | 1969 | Valid. | | | |
Gavinaspis[5] | Dupret Zhu | 2008 | Valid. | | | |
Gemuendenaspis | Miles | 1962 | Valid. | | | |
Gemuendina | Traquair | 1903 | Valid. | | | |
Glyptaspis | Newberry | 1890 | Valid. | | | |
Golshanichthys[6] | Lelièvre Janvier Goujet | 1981 | Valid. | | | |
Goniosteus | Gross | 1933 | Valid. | | | |
Goodradigbeeon | White | 1978 | Valid. | | | |
Gorgonichthys | Claypole | 1892 | Valid. | | | |
Grazosteus | Gross | 1958 | Valid. | | | Arthrodire incertae sedis, known only from a medial dorsal plate with a pair of prominent, posterior-pointing prongs. |
Groenlandaspis | Heintz | 1932 | Valid. | | | |
Grossaspis | White Moy-Thomas | 1940 | Valid. | | | Replacement name for Ceraspis Schlueter, 1887 |
Grossilepis[7] | Stensiö | 1949 | Valid. | | | |
Grossosteus[1] | White Moy-Thomas | 1940 | Valid. | | | Replacement name for Coelosteus Gross, 1930 |
Gymnotrachelus | Dunkle Bungart | 1939 | Valid. | | | |
Gyracanthus[1] | Agassiz | 1835 | Valid. | | | |
Gyroplacosteus | Obruschev | 1930 | Valid. | | | |
Hadrosteus | Gross | 1932 | Valid. | | | |
Harrytoombsia | Miles Dennis | 1979 | Valid. | | | |
Heintzaspis | Strand | 1932 | Valid. | | | Replacement name for Acanthapsis Newberry, 1975 |
Heintzichthys | Whitley | 1933 | Valid. | | | Replacement name for Stenognathus Newberry, 1898 |
Heightingtonaspis[1] | White | 1969 | Valid. | | | |
Heintzosteus[1] | Goujet | 1984 | Valid. | | | |
Heterogaspis[1] | Strand | 1932 | Valid. | | | |
Heterosteus | Asmuss | 1856 | Valid. | | | |
Heteroyunnanolepis | Wang | 1944 | Valid. | | | |
Holdenius | Dunkle Bungart | 1942 | Valid. | | | |
Hollardosteus | Lehman | 1956 | Valid. | | | |
Holonema | Newberry | 1890 | Valid. | | | |
Homosteus[1] | Asmuss | 1856 | Valid. | | | |
Huginaspis[1] | Heintz | 1929 | Valid. | | | |
Hussakofia | Cossmann | 1910 | Valid. | | | Replacement name for Brachygnathus Hussakof, 1909 |
Hybosteus[1] | Gross | 1933 | Valid. | | | Replacement name for Coelosteus Gross, 1930 |
Incisoscutum | Dennis Miles | 1981 | Valid. | | | |
Jagorina | Jaekel | 1921 | Valid. | | | |
Jaekelaspis[1] | Heintz | 1929 | Valid. | | | |
Janiosteus[6] | Ivanov | 1988 | Valid. | | | |
Jerulalepis[1] | Burrow | 1996 | Valid. | | | |
Jiangxilepis | | | Valid. | | | |
Jiuchengia[1] | | | Valid. | | | |
Kendrichthys | | | Valid. | | | |
Kiangyousteus | | | Valid. | | | |
Kiangyosteus[1] | | | Valid. | | | |
Kimaspis | Mark-Kurik | 1973 | Valid. | | | |
Kimberia | Dennis-Bryan Miles | 1983 | Preocc. | | | Preoccupied by mollusc genus Kimberia Cotton & Woods, 1935 |
Kimberleyichthyes | Dennis-Bryan Miles | 1983 | Valid. | | | Replacement name for genus Kimberia Dennis-Bryan & Miles, 1983 |
Kolpaspis[1] | Pageau | 1969 | Valid. | | | |
Kolymaspis | Bystrow | 1956 | Valid. | | | |
Kosoraspis | Gross | 1959 | Valid. | | | |
Kueichowlepis[1] | P'an Wang | 1975 | Valid. | | | |
Kujdanowiaspis[1] | Stensiö | 1942 | Valid. | | | |
Kweichowlepis | | | Valid. | | | |
Lataspis[1] | Strand | 1932 | Valid. | | | Replacement name for Plataspis Heintz 1929 |
Latocamurus | Long | 1988 | Valid. | | | |
Lanrentaspis | Pageau | 1969 | Valid. | | | |
Laurentaspis | | | Lapsus Calami. | | | |
Lepadolepis | White Moy-Thomas | 1940 | Valid. | | | Replacement name for Ceratolepis Gross, 1933 |
Lehmanosteus[1] | Goujet | 1984 | Valid. | | | |
Leptosteus | Jaekel | 1919 | Valid. | | | |
Liognathus[1] | Agassiz | 1846 | Valid. | | | |
Liognathus[1] | Newberry | 1873 | Preocc. | | | Preoccupied by fish genus Liognathus Agassiz, 1846 |
Lispognathus[1] | Miller | 1892 | Valid. | | | Replacement name for Liognathus Newberry, 1873 |
Litilpetalichthyes | | | Valid. | | | |
Liujiangolepis | Wang | 1987 | Valid. | | | |
Livosteus[1] | Obruchev | 1962 | Valid. | | | |
Lophostracon[1] | Lankester | 1884 | Valid. | | | |
Luetkeichthys[1] | Bystrow | 1957 | Valid. | | | |
Lunaspis | Broili | 1929 | Valid. | | | |
Lyhoalepis[8] | Tong-Dzuy Janvier Doan-Nhat | 1994 | Valid. | | | |
Machaerognathus | Hussakof Bryant | 1919 | Valid. | | | |
Macropetalichthys | Norwood Owen | 1846 | Valid. | | | |
Macropetalichthys | Broili | 1933 | Preocc. | | | Preoccupied by fish genus Macropetalichthys Norwood & Owen, 1846 |
Maideria[1] | Lelièvre | 1995 | Valid. | | | |
Malerosteus | Kulczycki | 1957 | Valid. | | | |
Materpiscis[9] | Long Trinajstic Young Senden | 2008 | Valid. | | | |
Mcnamaraspis | Long | 1995 | Valid. | | | |
Mediaspis[1] | Heintz | 1929 | Valid. | | | |
Megaloplax | Obruchev | 1933 | Valid. | | | |
Melanosteus | Lelièvre Goujet | 1987 | Valid. | | | |
Microbrachius | Traquair | 1888 | Valid. | | | |
Microsteus | Gross | 1932 | Valid. | | | |
Millerosteus[1] | Stensiö | 1959 | Valid. | | | |
Mithakaspis | Young Goujet | 2003 | Valid. | | | |
Mizia | Zhu | 1996 | Valid. | | | |
Monaspis[1] | Heintz | 1929 | Valid. | | | |
Murmur | Whitley | 1951 | Valid. | | | Replacement name for Euptychaspis White & Moy-Thomas 1941 |
Murrindalaspis | Long | 1984 | Valid. | | | |
Mylostoma | Newberry | 1883 | Valid. | | | |
Neopetalichthys | Liu | 1973 | Valid. | | | |
Neophlyctaenius[1] | Denison | 1950 | Valid. | | | |
Nessariostoma | Broili | 1933 | Valid. | | | |
Notopetalichthys | Woodward | 1941 | Valid. | | | |
Oestophorus | Miller | 1892 | Valid. | | | Replacement name for Spenophorus Newberry, 1890 |
Ohioaspis | Wells | 1944 | Valid. | | | |
Ohiodorulites | Whitley | 1933 | Valid. | | | Replacement name for Acanthapsis Newberry, 1975 |
Omalosteus[10] | Zakharenko | 2006 | Valid. | | | |
Operchaliosteus | | | Valid. | | | |
Operchallosteus[1] | Kulczycki | 1957 | Valid. | | | |
Oracanthus[1] | Agassiz | 1837 | Valid. | | | |
Ottanosteus[1] | | | Valid. | | | |
Overtonaspis | White | 1961 | Valid. | | | |
Oxyosteus | Jaekel | 1911 | Valid. | | | |
Pachyosteus | Jaekel | 1903 | Valid. | | | |
Pageauaspis[1] | Denison | 1978 | Valid. | | | Replacement name for Quebecaspis Pageau, 1969 |
Palaeacanthaspis | Brotzen | 1934 | Valid. | | | |
Palaeomylus | Woodward | 1891 | Valid. | | | |
Panxiosteus | Wang | 1979 | Valid. | | | |
Parabelosteus | | | Valid. | | | |
Parabuchanosteus | White Toombs | 1972 | Valid. | | | |
Paramylostoma | Dunkle Bungart | 1945 | Valid. | | | |
Parapetalichthys[1] | Kuhn | 1949 | Valid. | | | Replacement name for Macropetalichthys Broili, 1933 |
Paraplesiobatis | Broili | 1933 | Valid. | | | |
Paraptyctodus[1] | | | Valid. | | | |
Parawalterosteus[1] | Stensiö | 1963 | Valid. | | | |
Pelycophorus[1] | | | Valid. | | | |
Phlyctaenacanthus[1] | Eastman | 1898 | Valid. | | | |
Phlyctaenaspis[1] | Traquair | 1890 | Valid. | | | Replacement name for Phlyctaenius Traquair, 1890 |
Phlyctaenius[1] | Traquair | 1890 | Preocc. | | | nec Phlyctaenium Zittel 1879 |
Pholidosteus | Jaekel | 1907 | Valid. | | | |
Phyllolepis[1] | Agassiz | 1844 | Valid. | | | |
Phymolepis | Chang | 1978 | Valid. | | | |
Phymosteus[1] | Wang Zhu | 2004 | Valid. | | | |
Pinguosteus | Long | 1990 | Valid. | | | |
Placolepis[1] | Ritchie | 1984 | Valid. | | | |
Plataspis[1] | Heintz | 1929 | Preocc. | | | Preoccupied by hemiptere genus Plataspis Hope, 1837 |
Platyaspis | Koenen | 1896 | Valid. | | | |
Plourdosteus | Ørvig | 1951 | Valid. | | | |
Ponerichthys[1] | Miller | 1892 | Invalid, declared a junior synonym of Dunkleosteus. | | | |
Prescottaspis | | | Valid. | | | |
Proaethaspis[1] | Denison | 1978 | Valid. | | | |
Procondylolepis[11] | Zhang | 1984 | Valid. | | | |
Prosphymaspis[1] | Gross | 1937 | Valid. | | | |
Protitanichthys[1] | | | Valid. | | | |
Pseudopetalichthys | Moy-Thomas | 1939 | Valid. | | | |
Pterichthyodes | Bleeker | 1859 | Valid. | | | |
Ptychaspis | Bryant | 1935 | Preocc. | | | Preoccupied by trilobite genus Ptychaspis Hall, 1863 |
Ptyctodopsis | Denison | 1985 | Valid. | | | |
Ptyctodus | Pander | 1858 | Valid. | | | |
Qataraspis | White | 1969 | Valid. | | | |
Quasipetalichthys | Liu | 1973 | Valid. | | | |
Quebecaspis[1] | Pageau | 1969 | Preocc. | | | Preoccupied by trilobite genus Quebecaspis Rasetti, 1944 |
Qujinolepis | Zhang | 1978 | Valid. | | | |
Rachiosteus | Gross | 1938 | Valid. | | | |
Radotina | Gross | 1950 | Valid. | | | |
Ramphodus[1] | Davis | 1883 | Valid. | | | |
Remigolepis[11] | Stensiö | 1931 | Valid. | | | |
Rhachiosteus | Gross | 1938 | Valid. | | | |
Rhamphodontus[1] | | | Valid. | | | |
Rhamphodopsis[1] | Watson | 1934 | Valid. | | | |
Rhampodus[1] | | | Valid. | | | |
Rhenonema | Obruchev | 1964 | Valid. | | | |
Rhinosteus | Jaekel | 1911 | Valid. | | | |
Rhynchodontus[1] | Jaekel | 1919 | Valid. | | | |
Rhynchodus | Newberry | 1873 | Valid. | | | |
Rhynchognathus[1] | Jaekel | 1929 | Valid. | | | |
Rhynchosteus[1] | Jaekel | 1925 | Valid. | | | |
Ringinia[1] | Whitley | 1950 | Valid. | | | |
Rinodus[1] | Newberry Worthen | 1866 | Valid. | | | |
Rolfosteus | Dennis Miles | 1979 | Valid. | | | |
Romundina | Orvig | 1975 | Valid. | | | |
Sedowichthys[1] | Bystrow | 1957 | Valid. | | | |
Selenosteus | Dean | 1901 | Valid. | | | |
Shearsbyaspis | Young | 1984 | Valid. | | | |
Sigaspis[1] | Goujet | 1973 | Valid. | | | |
Simblaspis[1] | Denison | 1958 | Valid. | | | |
Simosteus[1] | Dennis Miles | 1982 | Valid. | | | |
Sinolepis | Liu Pan | 1958 | Valid. | | | |
Squamatognathus | Hanke Stewart Lammers | 1996 | Valid. | | | |
Stenognathus[1] | Newberry | 1898 | Preocc. | | | Preoccupied by coleoptere genus Stenognathus Chaudoir, 1843 |
Stenosteus | Dean | 1901 | Valid. | | | |
Stensioella | Broili | 1933 | Valid. | | | |
Steurtzaspis[1] | | | Valid. | | | |
Stuertzaspis | Westoll Miles | 1963 | Valid. | | | |
Svalbardaspis[1] | Heintz | 1929 | Valid. | | | |
Synauchenia | Jaekel | 1919 | Valid. | | | |
Szelepis[12] | Liu | 1981 | Valid | | | Originally named Szeaspis Liu (1979),[1] but this name turned out to be preoccupied by the trilobite genus Szeaspis Chang, 1969 |
Taemasosteus | White | 1978 | Valid. | | | |
Taeniolepis | Gross | 1932 | Valid. | | | |
Tafilalichthys | Lehman | 1956 | Valid. | | | |
Tapinosteus | Stensiö | 1963 | Valid. | | | |
Taunaspis | Schmidt | 1933 | Valid. | | | |
Tiaraspis | Gross | 1962 | Valid. | | | |
Timanosteus | Obruchev | 1962 | Valid. | | | |
Titanichthys | Newberry | 1885 | Valid. | | | |
Tityosteus[1] | Gross | 1960 | Valid. | | | |
Tollichthys[1] | Bystrow | 1957 | Valid. | | | |
Tollodus | Mark-Kurik | 1977 | Valid. | | | |
Tomaiosteus[1] | Kulczycki | 1957 | Valid. | | | |
Tongdzuylepis[1] | Janvier Phuong | 1999 | Valid. | | | |
Toombsosteus | White | 1978 | Valid. | | | |
Torosteus | Gardiner Miles | 1990 | Valid. | | | |
Trachosteus | Newberry | 1890 | Valid. | | | |
Trematosteus | Jaekel | 1927 | Valid. | | | |
Tropidosteus | Gross | 1933 | Valid. | | | |
Tubalepis[13] | Panteleyev | 2003 | Valid. | | | |
Tubonasus | Dennis Miles | 1979 | Valid. | | | |
Uralosteus[1] | Mark-Kurik Young | 2003 | Valid. | | | |
Vukhuclepis[8] | Janvier Thanh Phuong Truong | 1997 | Valid. | | | |
Walterosteus[1] | Stensiö | 1959 | Valid. | | | |
Watsonosteus | Miles Westoll | 1963 | Valid. | | | |
Weejasperaspis | White | 1978 | Valid. | | | |
Westralichthys[6] | Long | 1987 | Valid. | | | |
Wheathillaspis | White | 1961 | Valid. | | | |
Wijdeaspis | Obruchev | 1964 | Valid. | | | |
Wijeaspis[1] | | | Valid. | | | |
Williamsaspis | White | 1952 | Valid. | | | |
Woodwardosteus[1] | White Moy-Thomas | 1940 | Valid. | | | |
Wufengshania | Pan | 2018 | Valid | | | |
Wuttagoonaspis[1] | Ritchie | 1973 | Valid. | | | |
Xichonolepis | Pan Wang | 1978 | Valid. | | | |
Xinanpetalichthyes | | | Valid. | | | |
Yiminaspis | Dupret | 2008 | Valid. | | | |
Yinosteus | | | Valid. | | | |
Yunnanocanthus[1] | | | Valid. | | | |
Yunnanolepis | Liu | 1963 | Valid. | | | |
Yurammia[1] | Young | 2005 | Valid. | | | |
Zhanjilepis | Zhang | 1978 | Valid. | | | |