Classification of Chatterton and Perry 1977

Cl. †Trilobita Walch 1771 [trilobite]
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Or. †Lichida Moore 1959
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Fm. †Lichidae Hawle and Corda 1847
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Invalid names: Ceratarginae Tripp 1957 [empty]
Or. †Proetida Fortey and Owens 1975
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Fm. †Proetidae Salter 1864
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Subfm. †Proetidellinae Hupe 1953
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G. †Warburgella Reed 1931
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Subg. †Warburgella (Anambon) Landrum and Sherwin 1976
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†Warburgella (Anambon) mackenziensis Chatterton and Perry 1977
†Warburgella rugulosa Alth 1874
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†Warburgella rugulosa hartensis Chatterton and Perry 1977
G. †Proetus Steininger 1831
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Subg. †Proetus (Coniproetus) Alberti 1966
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†Proetus (Coniproetus) whittakerensis Chatterton and Perry 1977
Or. †Conodontophorida Eichenberg 1930
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Fm. †Hibbardellidae Müller 1956
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G. †Delotaxis Klapper and Philip 1971
Fm. †Icriodontidae Müller and Müller 1957
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G. †Icriodus Branson and Mehl 1938
Fm. †Polygnathidae Bassler 1925
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G. †Ozarkodina Branson and Mehl 1933
Invalid names: Distacodontidae Bassler 1925 [empty]