Classification of Fohrer and Samankassou 2005
Or. Palaeocopida Henningsmoen 1953
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Fm. †Kirkbyidae Ulrich and Bassler 1906
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G. †Aurikirkbya Sohn 1950
G. †Knightina Kellett 1933
Fm. †Hollinellidae Bless and Jordan 1971
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