PBDB Taxon

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Heteroconchia

Bivalvia

Taxonomy

Heteroconchia was named by Gray (1854). It is extant.

It was reranked as the superorder Heteroconchia by Bouchet et al. (2010); it was reranked as the infraclass Heteroconchia by Carter et al. (2011), Bieler et al. (2014).

It was assigned to Autolamellibranchiata by Giribet and Wheeler (2002); to Bivalvia by Ward (1992), Bieler and Mikkelsen (2006), Scholz et al. (2008); and to Autobranchia by Bouchet et al. (2010), Carter et al. (2011), Bieler et al. (2014).

Subtaxa

Archiheterodonta, Eoastartella, Euheterodonta (syn. Cardioni), Heterodonta, Heterodonta (syn. Cardiomorphi), Lipanellidae, Palaeoheterodonta (syn. Uniomorphi), Parenia

Sister taxa

Archiheterodonta, Euheterodonta (syn. Cardioni), Heterodonta (syn. Cardiomorphi)

Entered

by J. Alroy on 2006-08-09; modified by M. Uhen on 2019-12-03

Synonyms

Eoastartella was named by Chang (1980) [Unclear whether this is a misspelling of Eoastarte or intended to be a new genus].

It was considered a nomen nudum by Chang (1980).
Eoastartella qinglongensis was named by Chang (1980).

It was considered a nomen nudum by Chang (1980).
Parenia was named by Biakov (2011) [Note: this genus *still* has not been formally described as of 2025. ].

It was considered a nomen nudum by Biakov (2011), Biakov (2019).
Parenia parenica was named by Biakov (2019).

It was considered a nomen nudum by Biakov (2019).

Synonymy list

Year	Name and author
1854	Heteroconchia Gray
1980	Eoastartella Chang p. 12
1980	Eoastartella qinglongensis Chang p. 12
1992	Heteroconchia Ward p. 78
2002	Heteroconchia Giribet and Wheeler
2006	Heteroconchia Bieler and Mikkelsen p. 230
2008	Heteroconchia Scholz et al.
2010	Heteroconchia Bouchet et al.
2011	Parenia Biakov p. 496
2011	Heteroconchia Carter et al. p. 11
2014	Heteroconchia Bieler et al. p. 104
2019	Parenia parenica Biakov p. 247 figs. Pl 4, figs 4,6,7,9

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa

Rank	Name	Author
phylum	Mollusca
class	Bivalvia
subclass	Autobranchia	(Groblen 1894)
infraclass	Heteroconchia	(Gray 1854)
infraclass	Heteroconchia	(Gray 1854)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Infracl. Heteroconchia Gray 1854

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Unr. Archiheterodonta Giribet 2008

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G. †Yunfuconcha Zhang et al. 2024

†Yunfuconcha bimenta Zhang et al. 2024

Unr. Euheterodonta Giribet and Distel 2003

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Superor. Anomalodesmata Dall 1889

G. †Erratomya Koppka 2004

†Erratomya calloviensis Koppka 2004

G. †Pseudoquenstedtia Koppka 2004

†Pseudoquenstedtia brevis Roeder 1882

†Pseudoquenstedtia elongata Roeder 1882

†Pseudoquenstedtia pommerana Koppka 2004

Superor. Imparidentia Bieler 2014

Or. Adapedonta Cossmann and Peyrot 1909

Superfm. Hiatelloidea Gray 1824

Fm. Hiatellidae Gray 1824

Invalid names: Glycimeridae Bronn 1849 [synonym], Pholeobiidae Leach 1852 [synonym], Saxicavidae Swainson 1835 [synonym]

Fm. Saxicavellidae Scott 1994

Superfm. Solenoidea Lamarck 1809

Fm. Pharidae Adams and A. 1858

Fm. Solenidae Lamarck 1809 [razor clams]

Or. Cardiida Ferussac 1822

Subor. †Anthracosiidina Silantiev and Carter 2011

Superfm. †Anthracosioidea Amalizky 1892

Superfm. †Opokielloidea Kanev 1983

Superfm. †Palaeanodontoidea Modell 1964

Superfm. †Prilukielloidea Starobogatov 1970

Subor. Cardiidina Ferussac 1822

Fm. †Palaeocarditidae Chavan 1969

Invalid names: Cardioidei Ferussac 1822 [empty]

Superfm. Cardioidea Lamarck 1809

Fm. Cardiidae Lamarck 1809 [cockle]

Invalid names: Goniocardiidae Scarlato and Starobogatov 1979 [synonym]

Fm. †Lahillidae Finlay and Marwick 1937

Fm. †Pterocardiidae Scarlato and Starobogatov 1979

Superfm. †Kalenteroidea Marwick 1953

Fm. †Kalenteridae Marwick 1953

Invalid names: Permophoridae van de Poel 1959 [replaced]

Invalid names: Myoconchidae Newell 1957 [empty]

Subor. Leptonidina Dall 1889

Superfm. Cyamioidea Philippi 1845

Superfm. Tellinoidea Blainville 1814

Fm. Donacidae Fleming 1828 [wedge clams]

Fm. †Icanotiidae Casey 1961

Fm. Psammobiidae Fleming 1828

Invalid names: Azoridae Leach 1852 [synonym]

Fm. †Quenstedtiidae Cox 1929

Fm. Semelidae Stoliczka 1870

Invalid names: Amphidesmatidae Latreille 1825 [synonym], Lavignonidae Récluz 1869 [synonym]

Fm. Solecurtidae d'Orbigny 1846

Fm. †Sowerbyidae Cox 1929

Fm. †Tancrediidae Meek 1864

Fm. Tellinidae Blainville 1814 [tellin clam]

Fm. †Unicardiopsidae Vokes 1967

Invalid names: Gastrochaenidina Morretes 1949 [empty]

Or. Galeommatida Lemer et al. 2019

Superfm. Galeommatoidea Gray 1840

Fm. Galeommatidae Gray 1840

Invalid names: Chlamydoconchidae Dall 1884 [synonym], Cyamionematidae Scarlato and Starobogatov 1979 [synonym], Ephippodontidae Scarlato and Starobogatov 1979 [synonym], Vasconiellidae Scarlato and Starobogatov 1979 [synonym]

Fm. Lasaeidae Gray 1842 [kelly clam]

Invalid names: Leptonidae Gray 1847 [synonym], Scacchiidae Récluz 1869 [synonym]

Invalid names: Ephippiodontidae Scarlato and Starobogatov 1979 [empty]

Or. Gastrochaenida Lange de Morretes 1949

Superfm. Gastrochaenoidea Gray 1840

Fm. Gastrochaenidae Gray 1840

Invalid names: Chaenidae Gray 1858 [objective synonym], Rocellariidae Ridewood 1903 [synonym]

Or. Lucinida Stoliczka 1871

Fm. Lucinidae Fleming 1828

G. †Armimiltha Olsson and Harbison 1953

G. Bretskya Glover and Taylor 2007

G. †Bulacanites Kase and Aguilar 2006

G. Cardiolucina Sacco 1901

Invalid names: Bellucina Dall 1901 [synonym]

G. Chavania Glover and Taylor 2007

Subfm. Codakiinae Korobkov 1954

G. †Cryptolucina Saul et al. 1996

G. †Dilora Marwick 1948

G. †Discoloripes Wellnhofer 1964

G. Discolucina Glover and Taylor 2007

G. Divaricella Martens 1880

Subfm. †Divaricellinae Gilbert 1967

G. Epicodakia Iredale 1930

G. †Ezolucina Amano et al. 2008

G. Falsolucinoma von Cosel 2006

G. Fimbria Mühlfeldt 1811

Invalid names: Corbis Cuvier 1817 [replaced]

Subfm. Fimbriinae Nicol 1950

Invalid names: Corbinae Stoliczka 1870 [replaced]

G. Funafutia Glover and Taylor 2001

G. †Gigantocyclus Termier and Termier 1977

G. Gonimyrtea Marwick 1929

G. Graecina von Cosel 2006

G. †Ilionia Billings 1874

Invalid names: Prolucina Dall 1896 [synonym]

G. †Indolucina Fürsich et al. 2000

G. Joellina von Cosel 2006

G. Lamylucina von Cosel 2006

G. Lepidolucina Glover and Taylor 2007

G. Leucosphaera Taylor and Glover 2005

Subfm. Leucosphaerinae Taylor and Glover 2011

G. Liralucina Glover and Taylor 2007

Subfm. Lucininae Fleming 1828

G. Maorithyas Fleming 1950

G. †Matanziella Frassinetti 1978

G. †Meganodontia Bouchet and Cosel 2004

G. Microloripes Cossmann 1901

Subfm. Milthinae Chavan 1969

G. †Milthona Marwick 1931

Subfm. Monitilorinae Taylor and Glover 2011

Subfm. Myrteinae Chavan 1969

G. †Nipponothracia Kanie and Sakai 1997

G. Notomyrtea Iredale 1924

G. †Nymphalucina Speden 1970

G. †Palaeolucina Chao 1907

G. Parvidontia Glover and Taylor 2007

Subfm. Pegophyseminae Taylor and Glover 2011

G. †Phenacocyclas La Rocque 1950

G. Pillucina Pilsbry 1921

Invalid names: Sydlorina Iredale 1930 [synonym]

G. Poumea

G. †Pseudomiltha Fischer 1887

G. †Pteromyrtea Finlay 1926

G. †Sinbadiella Hautmann and Nützel 2005

G. Solelucina Glover and Taylor 2007

G. †Superlucina Taylor and Glover 2009

G. †Tehamatea Kiel 2013

G. Tinalucina von Cosel 2006

G. Wallucina Iredale 1930

Invalid names: Gibbolucina (Eomiltha) gyrata Gabb 1864 [nomen dubium], Ilioniinae Fleming 1828 [empty], Phacoides joannis Dall 1905 [nomen nudum]

Superfm. Lucinoidea Fleming 1828

Fm. †Mactromyidae Cox 1929

Invalid names: Unicardiidae Fischer 1887 [replaced]

Fm. †Paracyclidae Johnston 1993

Invalid names: Lucinacea Fleming 1828 [replaced]

Fm. Thyasiridae Dall 1901

G. Adontorhina Berry 1947

G. Axinopsida

Invalid names: Axinopsis Sars 1878 [replaced]

G. Axinulus Verrill and Bush 1898

G. Axinus Sowerby 1821

G. Conchocele Gabb 1866

G. †Cretaxinus Hryniewicz et al. 2014

G. †Eothyasira Karapunar et al. 2020

G. Genaxinus Iredale 1930

G. Leptaxinus Verrill 1898

G. Parathyasira Iredale 1930

G. Rhacothyas Åström and Oliver 2017

G. †Storthodon Giebel 1856

G. Tauraxinus Sacco 1901

G. Thyasira Lamarck 1818

Invalid names: Axinopsidinae Frank Bernard 1983 [empty], Cryptodontidae Dall 1895 [synonym], Thyasirinae Dall 1900 [empty]

Invalid names: Astartida Scarlato and Starobogatov 1971 [synonym], Donacoidea Fleming 1828 [empty], Kellioidea Forbes and Hanley 1848 [empty], Mactromyoidea Cox 1929 [empty], Pisidioidea Gray 1857 [empty], Thyasiroidea Dall 1900 [empty]

Unr. Neoheterodontei Taylor et al. 2007

Or. Myida Goldfuss 1820

G. †Capistrocardia

G. †Carterochaena

G. †Eufistulina Eames 1951

G. †Eutylus

G. †Jurassicorbula

G. †Lenticorbula

G. †Paramartesia

Invalid names: Myina Newell 1965 [empty], Pholadina Newell 1965 [empty]

Or. Sphaeriida Lemer et al. 2019

Superfm. Sphaerioidea Deshayes 1854

Or. Venerida Gray 1854

G. †Adansonella

G. †Aliodonax

G. †Andrusovicardium

G. †Aphaea

G. †Bungoella

Superfm. Carditacea Fleming 1820

G. Carditellopsis

G. †Caspimactra

Superfm. Chamoidea Blainville 1825

G. †Chartocardium

Superfm. Corbiculoidea Gray 1847

Invalid names: Corbiculacea Gray 1847 [replaced]

G. †Cryptocoelopis Bittner 1895

G. †Cterocardia

G. †Dacicardium

G. †Dobrogimactra

Unr. Dreissenoitei Moore 1952

G. †Ergenica

G. †Farisia

G. †Fischericardium

G. †Fuscocardium

G. †Geoffbondia

G. Glycydonta

G. †Hubeiconcha Wang 1993

G. †Korobkoviella

G. Leporimetus

Superfm. Leptonoidea Gray 1847

G. †Leukomoides

G. †Leuroactis Stewart 1930

G. †Liromissus

G. Loxoglypta Dall et al. 1939

G. Luniulicardia Gray 1853

G. †Luxuridacna

Superfm. Mactroidea Lamarck 1809

G. †Mancosinodia Kadolsky 1988

G. †Mesochione

G. †Miricardium

G. Neotapes

G. †Neovenerella

G. †Nilobia

G. †Nipponomarcia Ikebe 1941

G. †Olssonella Glibert and Van de Poel 1967

G. †Osoinia

G. †Paraarctica Motasi and Moisescu 1974

G. †Plicatiforma

G. †Protagelus

G. †Pseudoarcopagia Sepkoski 2002

G. †Pseudopermorphus Ciriacks 1963

G. †Rochella

G. †Sarmaticardium

G. †Sarmatidonax

G. †Siungiudella

G. †Sublandinia

G. †Subvenericardia

G. †Taiwancorbicula

G. †Taiwanobarnea

G. †Tancretella

G. Tentidonox Iredale 1930

G. †Tenuimactra

G. †Tivellina Cossmann 1886

Superfm. Tridacnoidea Lamarck 1819

Invalid names: Tridacnacea Lamarck 1819 [replaced]

G. †Trigonocrassatella

G. †Urbnisia

G. †Venericardiella

Unr. Veneroitei Gray 1854

G. †Verchojanogrammysia

Invalid names: Arcticina Newell 1965 [empty], Chlamydoconchacea Dall 1884 [empty], Corbuloidea Lamarck 1818 [empty], Cyrenoidoidea Adams and Adams 1857 [empty], Kellielloidea Fischer 1887 [empty], Lucinina Dall 1889 [empty], Scrobicularioidea Scarlato and Starobogatov 1856 [empty]

Invalid names: Cardioni Ferussac 1822 [synonym]

Subcl. Heterodonta Neumayr 1884

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Fm. †Rhaetidiidae Dominici and Danise 2024

G. †Rhaetidia Bittner 1895

†Rhaetidia salomoni Bittner 1895

Invalid names: Corbula praenuntia Stoppani 1860 [replaced]

†Rhaetidia timorensis Krumbeck 1924

†Rhaetidia zittelii Bittner 1895

Unr. Septibranchia Pelseneer 1888

Invalid names: Cuspidarioida Scarlato and Starobogatov 1971 [empty], Verticordioida Scarlato and Starobogatov 1971 [empty]

G. †Solecurtoidomya Koppka 2004

†Solecurtoidomya senftii Andree 1860

Invalid names: Carditoidea Fleming 1820 [empty]

Unr. Heterodonta Neumayr 1884

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Invalid names: Cardiomorphi Ferussac 1822 [synonym], Orthonotida Pojeta 1978 [empty], Tanaodontidae Liu 1976 [empty]

Fm. †Lipanellidae Sánchez 2005

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G. †Goniophorina Isberg 1934

G. †Cosmogoniophorina Isberg 1934

†Cosmogoniophorina tenuicostata Harrington 1938

†Goniophorina (Cosmogoniophorina) carinata Isberg 1934

Subg. †Goniophorina (Goniophorina) Isberg 1934

†Goniophorina carinata Isberg 1934

†Goniophorina nitidula Kříž 2008

†Goniophorina semiradiata Isberg 1934

†Goniophorina volvens Isberg 1934

Invalid names: Digoniomya Whidborne 1897 [synonym]

G. †Lipanella Sánchez 2005

†Lipanella purmamarcensis Sánchez 2005

G. †Paraphtonia Khalfin 1958

†Paraphtonia imitabilis Khalfin 1958

Subcl. Palaeoheterodonta Newell 1965

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Or. Trigoniida Dall 1889

G. †Andivaugonia

G. †Antutitrigonia

G. †Arabitrigonia

G. †Columbitrigonia

G. †Dampietrigonia

G. †Gobiella

G. †Heslingtonia Fleming 1987

G. †Kupenga

G. †Litotrigonia

G. †Macrotrigonia Camacho and Olivero 1985

G. †Mediterraneotrigonia

Superfm. †Megatrigonioidea van Hoepen 1929

Fm. †Pterotrigoniidae van Hoepen 1929

Subfm. †Oistotrigoniinae Cooper 2015

Subfm. †Scabrotrigoniinae Cooper 1989

G. †Ussuritrigonia Konovalov 1978

Superfm. †Myophorelloidea Kobayashi 1954

Fm. †Frenguelliellidae Nakano 1960

G. †Terrypoultoniella Echevarría et al. 2021

Invalid names: Poultoniella Echevarría et al. 2021 [replaced]

Unr. †Megatrigonioidae van Hoepen 1929

Unr. †Megatrigoniitae van Hoepen 1929

Unr. †Rutitrigoniitae van Hoepen 1929

Unr. †Myophorelloidae Kobayashi 1954

Fm. †Buchotrigoniidae Leanza 1993

Fm. †Laevitrigoniidae Saveliev 1958

Fm. †Myophorellidae Kobayashi 1954

Fm. †Steinmanellidae Cooper 1991

Subfm. †Steinmanellinae Cooper 1991

Subfm. †Yaadiinae Cooper and Leanza 2017

G. †Nakanotrigonia

G. †Neuquenenitrigonia

G. †Paranditrigonia

G. †Procostaria

Superfm. †Pseudocardinioidea Martinson 1961

Fm. †Pseudocardiniidae Martinson 1961

G. †Apseudocardinia Liu and Zhu 1978

G. †Hamiconcha Huang et al. 1981

G. †Jiangxiella Liu 1968

G. †Pseudocardinia Martinson 1959

G. †Xinjiangconcha Wei 1984

G. †Xinyuella Chen and Xu 1980

Fm. †Utschamiellidae Kolesnikov 1977

G. †Utschamiella Ragozin 1937

G. †Skwarkoella

Subor. Trigoniina Dall 1899

Superfm. Trigoniacea Lamarck 1819

G. †Anopisthodon Philippi 1899

G. †Aulacopleurum Philippi 1899

Superfm. Trigonioidea Lamarck 1819

Fm. †Costatoriidae Newell and Boyd 1975

G. †Procostatoria Newell and Boyd 1975

Fm. †Eoschizodidae Newell and Boyd 1975

G. †Eoschizodus Cox 1951

Fm. †Groeberellidae Pérez et al. 1995

G. †Groeberella Leanza 1993

Fm. †Ladinomyidae Prinoth and Posenato 2023

G. †Ladinomya Prinoth and Posenato 2023

Fm. †Myophoriidae Bronn 1847

G. †Amlerella Franke 2016

G. †Atalantia Termier and Verriez 1974

G. †Baidiostraca Guo 1988

G. †Caledogonia Freneix and Avias 1977

G. †Costatoria Waagen 1907

G. †Dolabra M'Coy 1844

G. †Elegantinia Waagen 1907

Invalid names: Lyriomyophoria Kobayashi 1954 [objective synonym]

G. †Erugonia Newton et al. 1987

G. †Gruenewaldia von Wöhrmann 1889

G. †Guizhoumyophoria Fang 2009

Invalid names: Quadratia Yin 1974 [replaced]

G. †Hefteria

G. †Heminajas Wöhrmann 1891

G. †Myophoria Bronn 1834

Invalid names: Trigonellites von Schlotheim 1820 [synonym]

G. †Neoschizodus Giebel 1855

G. †Paraschizodus Newell and Boyd 1975

G. †Praemyophoria Khalfin 1940

G. †Rhenania Waagen 1907

G. †Rhenanomya LaRoque 1969

G. †Toechomya

G. †Trionychodia Guo 1988

G. †Yangella Liu and Gu 1988

Invalid names: Cytherodontidae Miller [synonym], Gruenewaldiidae Cooper 1991 [synonym]

Fm. †Prosogyrotrigoniidae Kobayashi 1954

Subfm. †Praegoniinae Fleming 1962

Subfm. †Prosogyrotrigoniinae Kobayashi 1954

Fm. †Scaphellinidae Newell and Ciriacks 1962

G. †Scaphellina Newell and Ciriacks 1962

Fm. †Schizodidae Newell and Boyd 1975

Subfm. †Eoastartinae Newell and Boyd 1975

G. †Heteroschizodus Newell and Boyd 1975

G. †Schizodus King 1844

Invalid names: Protoschizodus de Koninck 1885 [synonym]

G. †Silurozodus Liljedahl 1992

Fm. †Sinodorinae Pojeta and Zhang 1984

Invalid names: Schizodinae Newell and Boyd 1975 [empty]

Fm. Trigoniidae Lamarck 1819

G. †Acanomyphoria Guo 1985

G. †Actinotrigonia

Subfm. †Anditrigoniinae Leanza 1993

G. †Asiatotrigonia Cox 1952

G. †Buchotrigonia Dietrich 1938

G. †Climacotrigonia

G. †Eotrigonia Cossmann 1912

G. †Geratrigonia Kobayashi 1954

G. †Heterotrigonia Cox 1952

G. †Ibotrigonia

G. †Korobkovitrigonia

G. †Kyushutrigonia Tamura and Nishimura 1994

G. †Latitrigonia Kobayashi 1957

G. †Linotrigonia van Hoepen 1929

G. †Liotrigonia Cox 1952

G. †Luxitrigonia Guo 1985

G. †Lyroschizodus Newell and Boyd 1975

G. †Maputrigonia Leanza 1985

G. †Megatrigonia van Hoepen 1929

G. †Mesotrigonia

G. †Microtrigonia

G. †Minetrigonia Kobayashi and Katayama 1938

Subfm. †Minetrigoniinae Kobayashi 1954

G. †Myophorigonia Cox 1952

G. Neotrigonia Cossmann 1912

Subfm. †Neuquenitrigoniinae Leanza 1993

G. †Nipponitrigonia Cox 1952

G. †Nototrigonia Cox 1952

Subfm. †Nototrigoniinae Skwarko 1963

Invalid names: Austrotrigoniinae Skwarko 1968 [synonym]

G. †Opisthotrigonia Cox 1952

G. †Pacitrigonia Marwick 1932

Subfm. †Pleurotrigoniinae van Hoepen 1929

G. †Prorotrigonia Cox 1952

Subfm. †Psilotrigoniinae Fleming 1987

G. †Quadratotrigonia Dietrich 1933

G. †Quoiecchia Crickmay 1930

G. †Rutitrigonia van Hoepen 1929

G. †Sichuantrigonia Gou 1993

G. †Sphenotrigonia Rennie 1936

Subfm. Trigoniinae Lamarck 1819

G. †Turbitrigonia

Invalid names: Lyrodontidae Bronn 1862 [synonym]

Superfm. †Trigonioidoidea Cox 1952

Fm. †Jilinoconchidae Ma 1989

G. †Jilinoconcha Ma 1989

Fm. †Nakamuranaiadidae Guo 1981

G. †Cyotrigonioides Guo 1981

G. †Enotrigonioides Guo 1987

G. †Nakamuranaia Suzuki 1943

Fm. †Nippononaiidae Chen 1987

G. †Sinonaia Guo 1981

Invalid names: Nippononaiinae Chen 1987 [empty], Sinonaiinae Chen 1987 [empty]

Fm. Pseudohyriidae Kobajashi 1968

G. †Gobiola Martinson 1975

G. †Pseudohyria MacNeil 1936

G. †Weichangella Yu and Yao 1980

Fm. †Sainschandiidae Kolesnikov 1977

G. †Sainschandia

Fm. †Trigonioididae Cox 1952

G. †Americunio Guo 1986

G. †Eotrigonioides Ma 1989

G. †Hoffetrigonia Suzuki 1940

G. †Linotrigonioides Guo 1987

Subfm. †Martinsonellinae Hong 1965

G. †Multiplicanaia Yu and Zhang 1984

G. †Nippononaia Suzuki 1941

Subfm. †Peregrinoconchinae Gu 1976

G. †Songhuanaia Gu 1976

G. †Trigonioides Kobayashi and Suzuki 1936

G. †Yeniella Modell 1964

Invalid names: Danlengiconchinae Sha 1993 [empty], Trigonioidinae Cox 1952 [empty]

Invalid names: Americunioninae Guo 1986 [empty], Plicatounionidae Chen 1987 [empty]

Superfm. †Trigonodoidea Modell 1942

Fm. †Desertellidae Dechauseaux 1946

G. †Desertella Haug 1905

Fm. †Trigonodidae Modell 1942

G. †Janaija Truschelev 1984

G. †Trigonodus Alberti 1864

G. †Zaletrigonia

G. †Zulutrigonia

Invalid names: Beichuanioidea Liu and Gu 1988 [empty], Lyrodesmatacea Ulrich 1894 [empty], Myophorellina Cooper 1991 [empty]

Or. Unionida Stoliczka 1871

Superfm. †Archanodontacea Weir 1969

Fm. †Archanodontidae Weir 1969

G. †Archanodon Howse 1878

G. †Dianolimnia Guo 1985

G. †Neamnigenia Khalfin 1950

Subor. Hyriidina Hoeh 2009

Superfm. Hyrioidea Swainson 1840

Fm. Hyriidae Swainson 1840

Invalid names: Propehyridellidae Iredale 1934 [synonym]

G. †Protelliptio Russell 1934

Subor. †Silesunionidina Skawina and Dzik 2011

Invalid names: Silesunionoidea Skawina and Dzik 2011 [empty]

Subor. †Silesunionina Skawina and Dzik 2011

Fm. †Silesunionidae Skawina and Dzik 2011

G. †Silesunio Skawina and Dzik 2011

Invalid names: Unionellidae Skawina and Dzik 2011 [empty]

G. †Tihkia Sahni and Tewari 1958

†Tihkia silesiaca Skawina and Dzik 2011

Subor. Unionidina Gray 1854

Superfm. Mullerioidea Deshayes 1832

Fm. Etheriidae Deshayes 1830

Fm. Iridinidae Swainson 1840

Invalid names: Pleiodontidae Rochebrune 1904 [synonym]

Fm. Mulleriidae Deshayes 1832

Invalid names: Pseudomulleriidae Starobogatov 1970 [synonym]

Superfm. Unionoidea Fleming 1828

Fm. †Actinodontophoridae Newell 1969

Fm. Margaritiferidae Haas 1940

Invalid names: Margaritanidae Ortmann 1910 [synonym], Promargaritiferidae Woodward 1994 [synonym]

Fm. †Mutelidae Swainson 1840

Fm. †Pachycardiidae Cox 1961

Fm. †Sancticarolitidae Simone and Mezzalira 1997

Fm. Unionidae Rafinesque 1820 [freshwater mussel]

Invalid names: Actinodontophoroidea Newell 1969 [empty], Amblemidae Rafinesque 1820 [empty], Archanodontoidea Modell 1957 [empty], Carydioidea Haffer 1959 [empty], Etherioidea Deshayes 1830 [empty]

Invalid names: Uniomorphi Gray 1854 [synonym]

Invalid names: Eoastartella Chang 1980 [nomen nudum], Parenia Biakov 2011 [nomen nudum]

Diagnosis

No diagnoses are available