Classification of Rigby and Dixon 1979
G. †Eochaunactis Rigby and Dixon 1979
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†Eochaunactis radiata Rigby and Dixon 1979
G. †Haplistion Young and Young 1877
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†Haplistion creswelli Rigby and Dixon 1979
†Haplistion cylindricum Rigby and Dixon 1979
†Haplistion minutum Rigby and Dixon 1979
G. †Haplistionella Rigby and Dixon 1979
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†Haplistionella garnieri Rigby and Dixon 1979
†Haplistionella minitraba Rigby and Dixon 1979
G. †Somersetella Rigby and Dixon 1979
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†Somersetella conicula Rigby and Dixon 1979
†Somersetella digitata Rigby and Dixon 1979
Fm. †Anthaspidellidae Miller 1889
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