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Myidae (softshell clam)

Bivalvia - Pholadida - Myidae

Synonymy list
YearName and author
1809Myidae Lamarck
1895Myidae Stanton p. 61
1965Myidae Newell p. 20
1980Myidae Vokes p. 180
1987Myidae Ward and Blackwelder p. 130
1992Myidae Ward p. 111
2000Myidae Coan et al. p. 466
2006Myidae Rosenberg et al.
2009Myidae Nevesskaja
2010Myidae Bouchet et al.
2011Myidae Carter et al. p. 18

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
RankNameAuthor
infraclassHeteroconchia(Gray 1854)
—CardiomorphiFerussac 1822
—CardioniFerussac 1822
—CardiidiaFerussac 1822
—CardiataFerussac 1822
superorderPholadiformiiGray 1854
orderPholadidaGray 1854
superfamilyMyoidea(Lamarck 1809)
familyMyidaeLamarck 1809
familyMyidaeLamarck 1809

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.

Fm. Myidae Lamarck 1809 [softshell clam]
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G. Cryptomya Conrad 1848
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Invalid names: Cryptomya oregonensis Dall 1909 [synonym]
†Cryptomya quadrata Arnold 1909
†Cryptomya quadrata vancouverensis Clark and Arnold 1923
†Cryptomya washingtoniana Weaver 1912
†Mya (Cryptomya) ovalis Conrad 1856
G. Mya Linnaeus 1758
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Subg. Mya (Arenomya) Winkworth 1930
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†Mya japonica oonogai Makiyama 1934
Invalid names: Mya japonica Jay 1857 [synonym]
†Mya (Arenomya) arrosis MacNeil 1965
†Mya (Arenomya) elegans Eichwald 1871
†Mya (Arenomya) ezoensis Nagao and Inoue 1941
†Mya (Arenomya) fujiei MacNeil 1965
†Mya (Arenomya) grewingki Makiyama 1934
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†Mya grewingki elongata Nagao and Inoue 1941
Invalid names: Mya kusiroensis Nagao and Inoue 1941 [synonym]
†Mya (Arenomya) kusiroensis Nagao and Inoue 1941
†Mya (Arenomya) marujamensis Zhidkova 1994
†Mya (Arenomya) nucleoides Wilckens 1911
†Mya (Arenomya) profundior Grant and Gale 1931
†Mya (Arenomya) ugolnensis Devjatilova and Volobueva 1981
Subg. †Mya (Geramya) Stilwell and Zinsmeister 1992
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†Mya (Geramya) ekelofi Stilwell and Zinsmeister 1992
Subg. Mya (Mya) Linnaeus 1758
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†Mya (Mya) cuneiformis Bohm 1915
†Mya (Mya) ochotica Ilyina 1957
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Invalid names: Mya (Mya) uzenensis Nomura and Zinbo 1937 [synonym]
†Mya (Mya) pullus Sowerby 1826
†Mya (Mya) salmonensis Clark 1932
Mya (Mya) truncata Linnaeus 1758
†Mya convexa Noda 1992
†Mya cuneiformis Böhm 1915
†Mya dilata Phillips 1829
†Mya ilyinensis Sinelnikova 1991
†Mya kovatschensis Kristofovich 1947
†Mya majanatschensis Ilyina 1963
†Mya montereyana Conrad 1856
†Mya producta Conrad 1838
†Mya sachalinensis Kristofovich 1957
†Mya schweinfurthi Mayer-Eymar 1887
Mya simplex Holmes 1860
†Mya tigilensis Kristofovich 1947
†Mya virgo Martin 1879
†Mya wilsoni Ward 1992
Invalid names: Hiatula [objective synonym]
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†Paramya subovata Conrad 1845
G. Platyodon Conrad 1837
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†Platyodon nipponica Uozumi and Fujie 1956
†Platyodon piedraensis Wiedey 1929
G. Sphenia Turton 1822
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†Sphenia aequilateralis Deshayes 1857
†Sphenia angusta Deshayes 1857
†Sphenia angustata Sowerby 1826
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Invalid names: Mya tongrorum de Ryckholt 1852 [synonym]
†Sphenia cuneiformis Deshayes 1857
†Sphenia donaciformis Deshayes 1857
†Sphenia dubia Lea 1845
Sphenia fragilis Adams and Adams 1854
Sphenia iheringiana Pilsbry 1897
†Sphenia luticola Valenciennes 1846
†Sphenia meganosensis Clark and Woodford 1927
†Sphenia myalis Deshayes 1857
†Sphenia passyana Deshayes 1857
†Sphenia pusilla Sorgenfrel 1958
†Sphenia radiatula Cossmann 1882
†Sphenia terquemi Deshayes 1857
G. Tugonia RŽcluz 1846
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Subg. †Tugonia (Distugonia) Iredale 1936
G. †Venatomya Iredale 1930
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Invalid names: Cryptomyinae Habe 1977 [empty], Myinae Lamarck 1809 [empty], Spheniinae Frank Bernard 1983 [empty]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragonitec
Locomotion: facultatively mobilef
Life habit: infaunalf
Diet: suspension feederf
Vision: blindc
Created: 2009-09-09 13:49:19
Modified: 2009-09-09 15:49:19
Source: f = family, c = class
References: Sanchez Roig 1926, Aberhan et al. 2004

Age range

Maximum range based only on fossils: base of the Middle Bathonian to the top of the Holocene or 167.70000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 164.7 Ma

Collections (603 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Middle Bathonian167.7 - 164.7France (Basse-Normandie) Mya scripta (49334)
Barremian129.4 - 125.0Canada (Northwest Territories) Mya sp. (55861)
Barremian129.4 - 125.0Canada (British Columbia) Mya sp. (88120 88121)
Piripauan85.8 - 83.5New Zealand Mya sp. (78369 83521)
Early/Lower Campanian83.5 - 70.6Canada (Alberta) Mya sp. (89219)
Danian66.0 - 61.6France Sphenia sp. (20816)
Danian66.0 - 61.6Belgium Sphenia duponti, Sphenia excelsa, Sphenia haudrugata (22931)
Danian66.0 - 61.6Poland Sphenia duponti (27625)
Ypresian56.0 - 47.8USA (California) Sphenia meganosensis (52430 52432)
Ypresian56.0 - 47.8Antarctica (Seymour Island) Mya sowerbyi, Mya nucleoides, Mya ekelofi (63549)
Ypresian - Lutetian56.0 - 41.3Antarctica (Seymour Island) Mya nucleoides, Mya ekelofi (63551)
Ypresian - Lutetian56.0 - 41.3Antarctica Mya ekelofi (72401) Mya ekeloti (72405)
Early/Lower Eocene55.8 - 48.6Hungary Sphenia hungarica (78013)
Early/Lower Eocene55.8 - 48.6Russian Federation Mya uzenensis, Mya grewingki, Mya sachalinensis, Mya cuneiformis (70564)
Lutetian47.8 - 41.3United Kingdom (England) Sphenia sp. (8047)
Lutetian47.8 - 41.3Japan Mya ezoensis (70900 70901)
Lutetian47.8 - 41.3Pakistan Mya sp. (45620 45621)
Lutetian - Bartonian47.8 - 38.0Russian Federation Mya iljinensis, Sphenia snatolana, Mya kovatschensis, Mya tigilensis (50051)
Lutetian - Bartonian47.8 - 38.0Japan (Hyogo) Cryptomya sp. (102036 102038 102039)
Middle Eocene47.8 - 37.71Egypt (Quseir) Tugonia lorioli, Tugonia zitteli (3300)