Classification of Oraspold 1956

Subg. †Rafinesquina (Playfairia) Conrad 1839
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Or. †Protremata Beecher 1891
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Superfm. †Orthacea Woodward and Schuchert 1852
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Fm. †Orthidae Woodward 1852
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G. †Hesperorthis Schuchert and Cooper 1931
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†Hesperorthis rae Oraspold 1956
G. †Nicolella Reed 1917
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†Nicolella alliku Oraspold 1956
†Nicolella patens Oraspold 1956
Fm. †Plectorthidae Schuchert and Le Vene 1929
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G. †Platystrophia King 1850
Invalid names: Pentameracea M'Coy 1844 [empty], Strophomenacea King 1846 [empty]
†Platystrophia dentata Pander 1830
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†Platystrophia dentata evari Oraspold 1956
†Platystrophia crassoplicata Alichova 1951
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Or. †Telotremata Schuchert 1895
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Superfm. †Rhynchonellacea Gray 1848
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Fm. †Rhynchonellidae Gray 1848
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G. †Rhynchotrema Hall 1860
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†Rhynchotrema nobilis Oraspold 1956
†Rhynchotrema parva Oraspold 1956
Invalid names: Atrypacea Gill 1871 [empty]
Subg. †Rafinesquina (Rafinesquina) Hall and Clarke 1892
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