Classification of Chapman 1895
G. Ammodiscus Reuss 1862
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†Ammodiscus anceps Brady 1876
†Ammodiscus auricula Chapman 1895
†Ammodiscus centrifugus Brady 1873
†Ammodiscus fusiformis Chapman 1895
†Ammodiscus incertus d'Orbigny 1839
†Ammodiscus jurassicus Haeusler 1882
†Ammodiscus milioloides Jones et al. 1869
†Ammodiscus pusillus Geinitz 1848
†Ammodiscus robertsoni Brady 1876
G. †Haplophragmium
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†Haplophragmium agglutinans d'Orbigny 1846
†Haplophragmium canariense d'Orbigny 1839
†Haplophragmium emaciatum Brady 1884
†Haplophragmium neocomianum Chapman 1894
†Haplophragmium rhaeticum Chapman 1895
G. †Stacheia Brady 1876
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†Stacheia amplexa Vine 1882
†Stacheia congesta Brady 1876
†Stacheia cuspidata Chapman 1895
†Stacheia dispansa Chapman 1895
†Stacheia intermedia Chapman 1895
†Stacheia triradiata Chapman 1895