Classification of Kase 1988
Subg. †Pseudozygopleura (Stephanozyga) Knight 1930
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†Pseudozygopleura (Stephanozyga) nishimurai Kase 1988
Fm. †Lophospiridae Wenz 1938
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Subg. †Straparollus (Euomphalus) Sowerby 1814
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†Straparollus (Euomphalus) asanoi Kase 1988