Classification of Owen and Harper 1982

Or. †Acrotretida Kuhn 1949
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Invalid names: Acrotretidina Kuhn 1949 [empty]
Or. †Orthida Schuchert and Cooper 1932
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Subor. †Orthidina Schuchert and Cooper 1932
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Superfm. †Orthacea Woodward and Schuchert 1852
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Fm. †Orthidae Woodward 1852
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Subfm. †Productorthinae Schuchert and Cooper 1931
Fm. †Plectorthidae Schuchert and Le Vene 1929
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Subfm. †Plectorthinae Schuchert and Le Vene 1929
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G. †Plectorthis Hall and Clarke 1892
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Subfm. †Rhactorthinae Williams 1963
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G. †Rhactorthis Williams 1963
Superfm. †Triplesiacea Schuchert 1913
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Fm. †Triplesiidae Schuchert 1913
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G. †Oxoplecia Wilson 1913
G. †Triplesia Hall 1859
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†Triplesia extans Emmons 1842
Invalid names: Enteletacea Waagen 1884 [empty]
Or. †Strophomenida Opik 1934
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Superfm. †Plectambonitacea Jones 1928
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Fm. †Sowerbyellidae Opik 1930
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Subfm. †Sowerbyellinae Opik 1930
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G. †Sowerbyella Jones 1928
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†Sowerbyella sericea Sowerby 1839
Invalid names: Strophomenacea King 1846 [empty]
Or. †Pentamerida Schuchert and Cooper 1931
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Subor. †Syntrophiidina Ulrich and Cooper 1936
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Invalid names: Porambonitacea Davidson 1853 [empty]
Fm. †Proetidae Salter 1864
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Subfm. †Tropidocoryphinae Pribyl 1946
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G. †Decoroproetus Pribyl 1946
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†Decoroproetus decorus Barrande 1846
Fm. †Aulacopleuridae Angelin 1854
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Subfm. †Aulacopleurinae Angelin 1854
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G. †Harpidella M'Coy 1849
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†Harpidella megalops McCoy 1846
Fm. †Odontopleuridae Burmeister 1843
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Subfm. †Apianurinae Whittington 1956
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G. †Apianurus Whittington 1956
Fm. †Trinucleidae Hawle and Corda 1847
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Subfm. †Cryptolithinae Angelin 1854
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G. †Broeggerolithus Lamont 1935
Fm. †Encrinuridae Angelin 1854
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Subfm. †Cybelinae Holliday 1942
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G. †Atractopyge Hawle and Corda 1847
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†Atractopyge verrucosa Dalman 1827
Fm. †Remopleurididae Hawle and Corda 1847
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G. †Remopleurides Portlock 1843
Fm. †Lichidae Hawle and Corda 1847
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Subfm. †Homolichinae Phleger 1936
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G. †Platylichas Gürich 1901
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†Platylichas margaritifer Nieszkowski 1857
Fm. †Illaenidae Hawle and Corda 1847
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G. †Stenopareia Holm 1886
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Fm. †Raphiophoridae Angelin 1854
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G. †Lonchodomas Angelin 1854
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†Lonchodomas rostratus Sars 1835
Fm. †Pterygometopidae Reed 1905
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Subfm. †Chasmopinae Pillet 1954
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G. †Toxochasmops McNamara 1979
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†Toxochasmops extensus Boeck 1838