This list of placoderms is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be members of the class Placodermi. This list excludes purely vernacular terms. It includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered placoderms. The modern descendants of placoderms, the bony and cartilaginous fishes, and their extinct descendants, the Acanthodii (without cartilaginous fishes), are not included here.
This list includes 334 generic names.
Naming conventions and terminology follow the International Code of Zoological Nomenclature. Technical terms used include:
Acanthaspis[1]
Newberry
1875
Preoccupied by hemiptere genus Acanthaspis Amyot & Serville, 1843, valid species synonymized with Kujdanowiaspis
Acantholepis[1]
Krøyer
1846
Acantholepis
Preocc.
Preoccupied by Acantholepis Krøyer, 1846
Actinolepis[1]
Agassiz
1845
Aethaspis[1]
Denison
1958
Africanaspis
Long Anderson Gess Hiller
1997
Aggeraspis[1]
Gross
1962
Ailuracantha[1]
White
1969
Aleosteus[1]
Johnson Elliott Wittke
2000
Anarthraspis[1]
Bryant
1934
Angarichthys[1]
Obruchev
1927
Antarctaspis[1]
1968
Antarctolepis
Antineosteus
Lelièvre
1984
Arctaspis[1]
Heintz
1929
Arctolepis[1]
Eastman
1908
Arctonema
Orvig
Arenipiscis
Young
1981
Asiacanthus[1]
Liu
1948
Placodermi incertae sedis
Aspidichthys
1873
Arthrodire incertae sedis
Asterolepis
Eichwald
1840
Valid.
Asterosteus
Atlantidosteus
Austrophyllolepis[1]
Long
Austroptyctodus[1]
Baringaspis[1]
Miles
1973
Batteraspis[1]
Pageau
Belemnacanthus
1898
Belgiosteus[1]
Lehman
Belosteus
Jaekel
Bimbianga[2]
2005
Bolivosteus
Goujet Janvier Suarez-Riglos
1985
Bollandaspis[1]
Schultze
1976
Boomeraspis[1]
1995
Bothriolepis[3]
Brachydeirus
Koenen
1880
Brachygnathus[1]
1844
Brachygnathus
Hussakof
1909
Preoccupied by placoderm genus Brachygnathus Agassiz, 1844
Brachyosteus
Braunosteus
Stensiö
1959
Breizosteus
Goujet
1980
Brindabellaspis
Brontichthys[1]
Claypole
1894
Junior synonym of Titanichthys
Bruntonichthys
Dennis Miles
Bryantaspis[1]
White Moy-Thomas
1940
Replacement name for Cryptaspis Bryant, 1934
Bryantolepis[1]
Buchanosteus
1945
Bullerichthys
Bungartius
Dunkle
1947
Burrinjucosteus
Callognathus
1890
Campbellodus
Miles Young
1977
Camuropiscis
1979
Carolowilhelmina
Mark-Kurik Carls
2002
Cartieraspis[1]
Cathlesichthys[1]
2004
Ceraspis
1887
Preoccupied by coleoptere genus Ceraspis Lepeletier & Serville, 1825
Ceratolepichthys
Whitley
Replacement name for Ceratolepis Gross, 1933
Ceratolepis
1933
Preoccupied by coleoptere genus Ceratolepis Chapuis, 1873
Changyonophyton[1]
Cheliophorus[1]
Misspelling of Chelyophorus
Chelyophorus
Chuchinolepis
Chang
1978
Clarkeosteus[1]
1964
Cobandrahlepis[1]
Coccosteus[1]
Miller
1841
Coelosteichthys[1]
Replacement name for Coelosteus Gross, 1930
Coelosteus
1930
Preoccupied by fish genus Coelosteus Newberry, 1887
Compagopiscis
Gardiner & Miles
1994
Companognathus
Cosmacanthus
Cryptaspidisca
Strand
1942
Cryptaspis
Preoccupied by coleoptere genus Cryptaspis Pascoe, 1842
Ctenurella
1960
Cyrtosteus
1932
Deinodus[1]
Hussakof Bryant
1919
Deirosteus
Wells
Denisonodus
Johnson Elliott
1996
Desmoporella
1971
Destnoporella[1]
Deveonema
Kulczycki
1957
Dhanguura[1]
Diandongpetalichthys
Pan Wang
Diadsomaspis[1]
1937
Dicksonosteus[1]
1975
Dinichthys
Dinomylostoma
1906
Diplognathus
1878
Dobrowlania
1944
Dunkleosteus
1956
Eastmanosteus
Eczematolepis
1892
Replacement name for Acantholepis Newberry, 1875
Eldenosteus
Elegantaspis[1]
Ellopetalichthys
Ørvig
Enseosteus
Entelognathus
Zhu et al
2013
Epipetalichthys
1925
Erikaspis
Dupret Goujet Mark-Kurik
2007
Errolosteus
Erromenosteus
Eskimaspis
Dineley Liu Yuhai
Euleptaspis[1]
Euptychaspis
1941
Replacement name for Ptychaspis Bryant, 1935. Preoccupied by trilobite genus Euptychaspis Ulrich, 1931
Euryaspidichthys[1]
1950
Replacement name for Euryaspis Bryant, 1932
Euraspis[1]
1991
Euryaspis
Preoccupied by coleoptere genus Euryaspis Blanchard, 1851
Eurycaraspis
Li
Fallacosteus
1990
Gaspeaspis[1]
Gavinaspis[5]
Dupret Zhu
2008
Gemuendenaspis
Gemuendina
Traquair
1903
Glyptaspis
Golshanichthys[6]
Lelièvre Janvier Goujet
Goniosteus
Goodradigbeeon
Gorgonichthys
Grazosteus
Arthrodire incertae sedis, known only from a medial dorsal plate with a pair of prominent, posterior-pointing prongs.
Groenlandaspis
Grossaspis
Replacement name for Ceraspis Schlueter, 1887
Grossilepis[7]
1949
Grossosteus[1]
Gymnotrachelus
Dunkle Bungart
1939
Gyracanthus[1]
1835
Gyroplacosteus
Obruschev
Hadrosteus
Harrytoombsia
Miles Dennis
Heintzaspis
Replacement name for Acanthapsis Newberry, 1975
Heintzichthys
Replacement name for Stenognathus Newberry, 1898
Heightingtonaspis[1]
Heintzosteus[1]
Heterogaspis[1]
Heterosteus
Asmuss
1856
Heteroyunnanolepis
Wang
Holdenius
Hollardosteus
Holonema
Homosteus[1]
Huginaspis[1]
Hussakofia
Cossmann
1910
Replacement name for Brachygnathus Hussakof, 1909
Hybosteus[1]
Incisoscutum
Jagorina
1921
Jaekelaspis[1]
Janiosteus[6]
Ivanov
1988
Jerulalepis[1]
Burrow
Jiangxilepis
Jiuchengia[1]
Kendrichthys
Kiangyousteus
Kiangyosteus[1]
Kimaspis
Mark-Kurik
Kimberia
Dennis-Bryan Miles
1983
Preoccupied by mollusc genus Kimberia Cotton & Woods, 1935
Kimberleyichthyes
Replacement name for genus Kimberia Dennis-Bryan & Miles, 1983
Kolpaspis[1]
Kolymaspis
Bystrow
Kosoraspis
Kueichowlepis[1]
P'an Wang
Kujdanowiaspis[1]
Kweichowlepis
Lataspis[1]
Replacement name for Plataspis Heintz 1929
Latocamurus
Lanrentaspis
Laurentaspis
Lepadolepis
Lehmanosteus[1]
Leptosteus
Liognathus[1]
Preoccupied by fish genus Liognathus Agassiz, 1846
Lispognathus[1]
Replacement name for Liognathus Newberry, 1873
Litilpetalichthyes
Liujiangolepis
1987
Livosteus[1]
Lophostracon[1]
Lankester
1884
Luetkeichthys[1]
Lunaspis
Broili
Lyhoalepis[8]
Tong-Dzuy Janvier Doan-Nhat
Machaerognathus
Macropetalichthys
Norwood Owen
Preoccupied by fish genus Macropetalichthys Norwood & Owen, 1846
Maideria[1]
Malerosteus
Materpiscis[9]
Long Trinajstic Young Senden
Mcnamaraspis
Mediaspis[1]
Megaloplax
Melanosteus
Lelièvre Goujet
Microbrachius
1888
Microsteus
Millerosteus[1]
Mithakaspis
Young Goujet
2003
Mizia
Zhu
Monaspis[1]
Murmur
1951
Replacement name for Euptychaspis White & Moy-Thomas 1941
Murrindalaspis
Mylostoma
1883
Neopetalichthys
Neophlyctaenius[1]
Nessariostoma
Notopetalichthys
Woodward
Oestophorus
Replacement name for Spenophorus Newberry, 1890
Ohioaspis
Ohiodorulites
Omalosteus[10]
Zakharenko
2006
Operchaliosteus
Operchallosteus[1]
Oracanthus[1]
1837
Ottanosteus[1]
Overtonaspis
1961
Oxyosteus
1911
Pachyosteus
Pageauaspis[1]
Replacement name for Quebecaspis Pageau, 1969
Palaeacanthaspis
Brotzen
Palaeomylus
1891
Panxiosteus
Parabelosteus
Parabuchanosteus
White Toombs
1972
Paramylostoma
Parapetalichthys[1]
Kuhn
Replacement name for Macropetalichthys Broili, 1933
Paraplesiobatis
Paraptyctodus[1]
Parawalterosteus[1]
1963
Pelycophorus[1]
Phlyctaenacanthus[1]
Phlyctaenaspis[1]
Replacement name for Phlyctaenius Traquair, 1890
Phlyctaenius[1]
nec Phlyctaenium Zittel 1879
Pholidosteus
1907
Phyllolepis[1]
Phymolepis
Phymosteus[1]
Wang Zhu
Pinguosteus
Placolepis[1]
Ritchie
Plataspis[1]
Preoccupied by hemiptere genus Plataspis Hope, 1837
Platyaspis
1896
Plourdosteus
Ponerichthys[1]
Prescottaspis
Proaethaspis[1]
Procondylolepis[11]
Zhang
Prosphymaspis[1]
Protitanichthys[1]
Pseudopetalichthys
Moy-Thomas
Pterichthyodes
Bleeker
1859
Ptychaspis
1935
Preoccupied by trilobite genus Ptychaspis Hall, 1863
Ptyctodopsis
Ptyctodus
Pander
1858
Qataraspis
Quasipetalichthys
Quebecaspis[1]
Preoccupied by trilobite genus Quebecaspis Rasetti, 1944
Qujinolepis
Rachiosteus
1938
Radotina
Ramphodus[1]
Davis
Remigolepis[11]
1931
Rhachiosteus
Rhamphodontus[1]
Rhamphodopsis[1]
Watson
Rhampodus[1]
Rhenonema
Rhinosteus
Rhynchodontus[1]
Rhynchodus
Rhynchognathus[1]
Rhynchosteus[1]
Ringinia[1]
Rinodus[1]
Newberry Worthen
1866
Rolfosteus
Romundina
Sedowichthys[1]
Selenosteus
Dean
1901
Shearsbyaspis
Sigaspis[1]
Simblaspis[1]
Simosteus[1]
1982
Sinolepis
Liu Pan
Squamatognathus
Hanke Stewart Lammers
Stenognathus[1]
Preoccupied by coleoptere genus Stenognathus Chaudoir, 1843
Stenosteus
Stensioella
Steurtzaspis[1]
Stuertzaspis
Westoll Miles
Svalbardaspis[1]
Synauchenia
Szelepis[12]
Originally named Szeaspis Liu (1979),[1] but this name turned out to be preoccupied by the trilobite genus Szeaspis Chang, 1969
Taemasosteus
Taeniolepis
Tafilalichthys
Tapinosteus
Taunaspis
Schmidt
Tiaraspis
Timanosteus
Titanichthys
1885
Tityosteus[1]
Tollichthys[1]
Tollodus
Tomaiosteus[1]
Tongdzuylepis[1]
Janvier Phuong
1999
Toombsosteus
Torosteus
Gardiner Miles
Trachosteus
Trematosteus
Tropidosteus
Tubalepis[13]
Panteleyev
Tubonasus
Uralosteus[1]
Mark-Kurik Young
Vukhuclepis[8]
Janvier Thanh Phuong Truong
Walterosteus[1]
Watsonosteus
Miles Westoll
Weejasperaspis
Westralichthys[6]
Wheathillaspis
Wijdeaspis
Wijeaspis[1]
Williamsaspis
1952
Woodwardosteus[1]
Wuttagoonaspis[1]
Xichonolepis
Xinanpetalichthyes
Yiminaspis
Dupret
Yinosteus
Yunnanocanthus[1]
Yunnanolepis
Yurammia[1]
Zhanjilepis
Uncited genera can be attributed to:
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