Classification of the suborder Davidsoniidina
Subor. †Davidsoniidina Copper 1996
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Superfm. †Davidsonioidea King 1850
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Fm. †Davidsoniidae King 1850
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G. †Davidsonia Bouchard-Chantereaux 1849
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†Davidsonia septata Copper 1996
†Davidsonia verneuillii Bouchard-Chantereaux 1849
G. †Zeravshania
Superfm. †Palaferelloidea Spriestersbach 1942
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Fm. †Karpinskiidae Poulsen 1943
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