Classification of Howe 1988

Cl. †Articulata Huxley 1869
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Superfm. †Plectambonitacea Jones 1928
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Fm. †Sowerbyellidae Opik 1930
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G. †Thaerodonta Wang 1949
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†Thaerodonta recedens Sardeson 1892
Superfm. †Orthacea Woodward and Schuchert 1852
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Fm. †Dolerothidae Opik 1934
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Subfm. †Glyptorthinae Schuchert and Cooper 1931
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G. †Glyptorthis Foerste 1914
Fm. †Plaesiomyidae Schuchert 1913
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G. †Austinella Foerste 1909
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†Austinella kankakensis McChesney 1861
G. †Plaesiomys Hall and Clarke 1892
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†Plaesiomys proavita Winchell and Schuchert 1892
G. †Retrorsirostra Schuchert and Cooper 1932
Fm. †Plectorthidae Schuchert and Le Vene 1929
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G. †Hebertella Hall and Clarke 1892
G. †Platystrophia King 1850
Superfm. †Strophomenacea King 1846
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Fm. †Strophomenidae King 1846
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Subfm. †Rafinesquininae Schuchert 1893
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G. †Rafinesquina Hall and Clarke 1892
Subfm. †Strophomeninae King 1846
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G. †Strophomena Rafinesque and De Blainville 1824
G. †Tetraphalerella Wang 1949
Superfm. †Enteletoidea Waagen 1884
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Fm. †Dalmanellidae Schuchert 1913
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G. †Diceromyonia Wang 1949
G. †Onniella Bancroft 1928
G. †Paucicrura Cooper 1956
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†Paucicrura quadrata Wang 1949
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Invalid names: Paucicrura oklahomensis Alberstadt 1973 [synonym]
G. †Pionodema Foerste 1912
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†Pionodema aberstadti Howe 1988
Superfm. †Atrypacea Gill 1871
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Fm. †Atrypidae Gill 1871
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Invalid names: Zygospirinae Waagen 1883 [empty]
†Glyptorthis insculpta Hall 1847
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