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Unioni

Bivalvia

Taxonomy
Unioni was named by Gray (1854). It is extant.

It was assigned to Uniomorphi by Carter et al. (2011).

Subtaxa
Lyrodesmatoidea, Unionata
Sister taxa
Unionata

Synonymy list
YearName and author
1854Unioni Gray
2011Unioni Carter et al. p. 11

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassHeteroconchia(Gray 1854)
—UniomorphiGray 1854
—UnioniGray 1854
—UnioniGray 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.

Unr. Unioni Gray 1854
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Superfm. †Lyrodesmatoidea Ulrich 1894
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Fm. †Lyrodesmatidae Ulrich 1894
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G. †Brachilyrodesma Pojeta and Gilbert-Tomlinson 1977
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†Brachilyrodesma radkei Pojeta and Gilbert-Tomlinson 1977
G. †Lyrodesma Conrad 1841
+
†Lyrodesma huguesensis Foerste 1924
†Lyrodesma major Ulrich 1879
†Lyrodesma planum Conrad 1841
†Lyrodesma postplanum Foerste 1924
†Lyrodesma truyolsi Gutiérrez-Marco and Babin 1999
G. †Lyronucula Fischer 1886
G. †Noradonta Pojeta and Gilbert-Tomlinson 1977
+
†Noradonta shergoldi Pojeta and Gilbert-Tomlinson 1977
G. †Pseudaxinus Salter 1864
G. †Siliquarca de Tromelin and Lebesconte 1875
G. †Tanaodon Kirk 1927
+
†Tanaodon louderbacki Kirk 1927
+
Invalid names: Neoactinodonta amygdalina Heidecker 1959 [synonym]
Invalid names: Neoactinodonta Heidecker 1959 [objective synonym]
G. †Tromelinodonta Babin 1982
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†Tromelinodonta armoricana de Tromelin and Lebesconte 1875
Fm. †Pseudarcidae Scarlato and Starobogatov 1979
+
G. †Pseudarca Tromelin and Lebesconte 1875
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†Pseudarca celtica Tunnicliff 1987
†Pseudarca incola Barrande 1881
†Pseudarca typa de Tromelin and Lebesconte 1875
Unr. Unionata Gray 1854
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Or. Trigoniida Dall 1889
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G. †Gobiella
G. †Heslingtonia Fleming 1987
G. †Kupenga
G. †Macrotrigonia Camacho and Olivero 1985
Superfm. †Myophorelloidea Kobayashi 1954
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Unr. †Megatrigonioidae van Hoepen 1929
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Unr. †Megatrigoniitae van Hoepen 1929
Unr. †Rutitrigoniitae van Hoepen 1929
Unr. †Myophorelloidae Kobayashi 1954
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Fm. †Buchotrigoniidae Leanza 1993
Fm. †Laevitrigoniidae Saveliev 1958
Fm. †Myophorellidae Kobayashi 1954
Fm. †Steinmanellidae Cooper 1991
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Subfm. †Yaadiinae Cooper and Leanza 2017
Invalid names: Frenguelliellidae Nakano 1960 [empty]
Superfm. †Pseudocardinioidea Martinson 1961
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Fm. †Pseudocardiniidae Martinson 1961
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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
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G. †Utschamiella Ragozin 1937
Subor. Trigoniina Dall 1899
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Superfm. Trigoniacea Lamarck 1819
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G. †Anopisthodon Philippi 1899
G. †Aulacopleurum Philippi 1899
Superfm. Trigonioidea Lamarck 1819
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Fm. †Costatoriidae Newell and Boyd 1975
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G. †Procostatoria Newell and Boyd 1975
Fm. †Eoschizodidae Newell and Boyd 1975
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G. †Eoschizodus Cox 1951
Fm. †Groeberellidae Pérez et al. 1995
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G. †Groeberella Leanza 1993
Fm. †Ladinomyidae Prinoth and Posenato 2023
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G. †Ladinomya Prinoth and Posenato 2023
Fm. †Myophoriidae Bronn 1847
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G. †Acanomyphoria Guo 1985
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
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Invalid names: Lyriomyophoria Kobayashi 1954 [objective synonym]
G. †Erugonia Newton et al. 1987
G. †Gruenewaldia von Wöhrmann 1889
G. †Guizhoumyophoria Fang 2009
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Invalid names: Quadratia Yin 1974 [replaced]
G. †Hefteria
G. †Heminajas Wöhrmann 1891
G. †Myophoria Bronn 1834
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Invalid names: Trigonellites von Schlotheim 1820 [synonym]
G. †Neoschizodus Giebel 1855
G. †Paraschizodus Newell and Boyd 1975
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
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Subfm. †Praegoniinae Fleming 1962
Subfm. †Prosogyrotrigoniinae Kobayashi 1954
Fm. †Scaphellinidae Newell and Ciriacks 1962
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G. †Scaphellina Newell and Ciriacks 1962
Fm. †Schizodidae Newell and Boyd 1975
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Subfm. †Eoastartinae Newell and Boyd 1975
G. †Heteroschizodus Newell and Boyd 1975
G. †Schizodus King 1844
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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. †Asiatotrigonia Cox 1952
G. †Buchotrigonia Dietrich 1938
G. †Eotrigonia Cossmann 1912
G. †Geratrigonia Kobayashi 1954
G. †Heterotrigonia Cox 1952
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. †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
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Invalid names: Austrotrigoniinae Skwarko 1968 [synonym]
G. †Opisthotrigonia Cox 1952
G. †Pacitrigonia Marwick 1932
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
Invalid names: Lyrodontidae Bronn 1862 [synonym], Pleurotrigoniinae van Hoepen 1929 [empty]
Superfm. †Trigonioidoidea Cox 1952
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Fm. †Jilinoconchidae Ma 1989
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G. †Jilinoconcha Ma 1989
Fm. †Nakamuranaiadidae Guo 1981
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G. †Cyotrigonioides Guo 1981
G. †Enotrigonioides Guo 1987
G. †Nakamuranaia Suzuki 1943
Fm. †Nippononaiidae Chen 1987
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G. †Sinonaia Guo 1981
Invalid names: Nippononaiinae Chen 1987 [empty], Sinonaiinae Chen 1987 [empty]
Fm. Pseudohyriidae Kobajashi 1968
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G. †Gobiola Martinson 1975
G. †Pseudohyria MacNeil 1936
G. †Weichangella Yu and Yao 1980
Fm. †Sainschandiidae Kolesnikov 1977
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Fm. †Trigonioididae Cox 1952
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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
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Fm. †Desertellidae Dechauseaux 1946
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G. †Desertella Haug 1905
Fm. †Trigonodidae Modell 1942
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G. †Janaija Truschelev 1984
G. †Trigonodus Alberti 1864
Invalid names: Beichuanioidea Liu and Gu 1988 [empty], Lyrodesmatacea Ulrich 1894 [empty], Megatrigonioidea van Hoepen 1929 [empty], Myophorellina Cooper 1991 [empty]
Or. Unionida Stoliczka 1871
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Superfm. †Archanodontacea Weir 1969
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Fm. †Archanodontidae Weir 1969
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G. †Archanodon Howse 1878
G. †Dianolimnia Guo 1985
G. †Neamnigenia Khalfin 1950
Subor. Hyriidina Hoeh 2009
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Superfm. Hyrioidea Swainson 1840
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Fm. Hyriidae Swainson 1840
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Invalid names: Propehyridellidae Iredale 1934 [synonym]
G. †Protelliptio Russell 1934
Subor. †Silesunionidina Skawina and Dzik 2011
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Invalid names: Silesunionoidea Skawina and Dzik 2011 [empty]
Subor. †Silesunionina Skawina and Dzik 2011
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Fm. †Silesunionidae Skawina and Dzik 2011
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G. †Silesunio Skawina and Dzik 2011
Invalid names: Unionellidae Skawina and Dzik 2011 [empty]
G. †Tihkia Sahni and Tewari 1958
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†Tihkia silesiaca Skawina and Dzik 2011
Subor. Unionidina Gray 1854
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Superfm. Mullerioidea Deshayes 1832
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Fm. Etheriidae Deshayes 1830
Fm. Iridinidae Swainson 1840
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Invalid names: Pleiodontidae Rochebrune 1904 [synonym]
Fm. Mulleriidae Deshayes 1832
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Invalid names: Pseudomulleriidae Starobogatov 1970 [synonym]
Superfm. Unionoidea Fleming 1828
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Fm. †Actinodontophoridae Newell 1969
Fm. Margaritiferidae Haas 1940
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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]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragonitec
Locomotion: facultatively mobilec
Life habit: infaunalc
Diet: suspension feederc
Vision: blindc
Created: 2004-02-28 11:33:36
Modified: 2010-02-12 03:59:35
Source: c = class
Reference: Aberhan et al. 2004

Age range

Maximum range based only on fossils: base of the Floian to the top of the Holocene or 477.70000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 470.0 Ma

Collections (5017 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Arenig478.6 - 466.0United Kingdom (England) Lyrodesma sp. (3686)
Arenig478.6 - 466.0France (Ille-et-Vilaine) Lyrodesma armoricana (20852 20860)
Arenig478.6 - 466.0France (Montagne Noire) Noradonta sp. (20828)
Arenig478.6 - 466.0Australia (Queensland) Trigonodus sp. (157069 157073)
Floian477.7 - 470.0China (Yunnan) Baidiostraca aberrans (200939)
Floian477.7 - 470.0France (Montagne Noire) Noradonta sp. (20820 20827)
Darriwilian467.3 - 458.4Australia (Queensland) Noradonta shergoldi (77521 77760)
Darriwilian467.3 - 458.4Australia (Northern Territory) Noradonta shergoldi (79314 79317)
Sarka466.0 - 466.0Czech Republic (Plzeňský) Leda incola (95016)
Sarka466.0 - 466.0Czech Republic (Cvikov) Pseudocyrtodonta incola (167385)
Sarka466.0 - 466.0Czech Republic Pseudocyrtodonta incola (95015 95017)
Dobrotivian459.0 - 457.9Spain (Ciudad Real) Lyrodesma truyolsi (174659 174660)
Dobrotivian - Berounian459.0 - 449.8France (Calvados) Siliquarca typa, Lyrodesma lebescontei, Lyrodesma securis (20851)
Soudleyan - Longvillian458.4 - 455.0United Kingdom (Northern Ireland) Lyrodesma radiatum (13840)
Caradoc458.4 - 449.5USA (Kentucky) Lyrodesma inornatum (64418)
Late/Upper Ordovician458.4 - 443.8France Pseudarca typa (174558)
Late/Upper Ordovician458.4 - 443.8USA (New York) Lyrodesma poststriatum (347)
Late/Upper Ordovician458.4 - 443.8USA (Maryland) Lyrodesma poststriatum (411)
Late/Upper Ordovician458.4 - 443.8USA (Virginia) Lyrodesma sp. (345)
Berounian - Harnagian457.9 - 457.2Czech Republic Pseudarca incola (155058 233135)