Classification of Jakobsen et al. 2014

Subph. †Rhynchonelliformea Williams et al. 1996
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Cl. Rhynchonellata Williams et al. 1996
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Or. †Orthida Schuchert and Cooper 1932
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Subor. †Orthidina Schuchert and Cooper 1932
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Superfm. †Orthoidea Woodward 1852
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Fm. †Hesperorthidae Schuchert and Cooper 1931
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G. †Hesperorthis Schuchert and Cooper 1931
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Hesperorthis tricenaria Conrad 1843
Or. Rhynchonellida Kuhn 1949
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Superfm. †Rhynchotrematoidea Schuchert 1913
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Fm. †Trigonirhynchiidae McLaren 1965
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Subfm. †Rostricellulinae Rozman 1969
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G. †Azamella Laurie 1991
G. †Lepidocycloides Nikiforova and Andreeva 1961
Cl. †Strophomenata Williams et al 1996
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Or. †Strophomenida Opik 1934
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Superfm. †Plectambonitoidea Jones 1928
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Fm. †Leptellinidae Ulrich and Cooper 1936
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Subfm. †Palaeostrophomeninae Cocks and Rong 1989
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G. †Lepidomena Laurie 1991
Superfm. †Strophomenoidea King 1846
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Fm. †Strophomenidae King 1846
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Subfm. †Furcitellinae Williams 1965
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G. †Murinella Cooper 1956
G. †Oepikina Salmon 1942
Subfm. †Strophomeninae King 1846
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G. †Strophomena Rafinesque and De Blainville 1824