Classification of Cobbold 1931
G. †Pagetia Walcott 1916
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†Pagetia annio Cobbold 1910
†Pagetia attleborensis Shaler and Foerste 1888
G. †Micmacca Matthew 1895
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†Micmacca comleyensis Cobbold 1931
†Micmacca protolenoides Cobbold 1931
G. †Strenuella Matthew 1887
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†Strenuella calceola Cobbold 1931
†Strenuella cobboldi Richter 1919
G. †Hyolithus d'Eichwald 1840
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†Hyolithus mimicus Cobbold 1931
†Hyolithus pallidus Cobbold 1931
Fm. †Dorypygidae Kobayashi 1935
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Subg. †Hyolithus (Orthotheca) Novak 1886
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†Hyolithus (Orthotheca) holmi Cobbold 1931
†Hyolithus (Orthotheca) striata Cobbold 1931