Classification of Briggs et al. 2008

Ph. Arthropoda Latreille 1829 [arthropod]
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G. †Isoxys Walcott 1890
Ph. †Euarthropoda [arthropod]
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Subph. †Arachnomorpha Lameere 1890 [trilobite-like]
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G. †Alalcomenaeus Simonetta 1970
G. †Dicranocaris Briggs et al. 2008
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Dicranocaris guntherorum Briggs et al. 2008
G. †Emeraldella Walcott 1912
G. †Leanchoilia Walcott 1912
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Leanchoilia hanceyi Briggs and Robison 1984
Leanchoilia protogonia Simonetta 1970
Leanchoilia superlata Walcott 1912
G. †Mollisonia Walcott 1912
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Mollisonia gracilis Walcott 1912
Mollisonia symmetrica Walcott 1912
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Invalid names: Mollisonia rara Walcott 1912 [synonym]
G. †Nettapezoura Briggs et al. 2008
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Nettapezoura basilika Briggs et al. 2008
G. †Sanctacaris Briggs and Collins 1988
G. †Sidneyia Walcott 1911
Cl. †Dinocarida Collins 1996
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Or. †Radiodonta Collins 1996
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Fm. †Anomalocarididae Raymond 1935
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Anomalocaris saron Hou et al. 1995
G. †Cucumericus Hou et al. 1995
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Cucumericus decoratus Hou et al. 1995
G. †Parapeytoia Hou et al. 1995
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Parapeytoia yunnanensis Hou et al. 1995
Cl. †Trilobita Walch 1771 [trilobite]
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Or. †Ptychopariida Swinnerton 1915
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Subor. †Ptychopariina Richter 1933
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Fm. †Alokistocaridae Resser 1939
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G. †Elrathia Walcott 1924
Subph. Crustacea Brünnich 1772 [crustacean]
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Or. †Canadaspidida Novozhilov in Orlov 1960
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Fm. †Canadaspididae Novozhilov in Orlov 1960
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G. †Canadaspis Novozhilov in Orlov 1960
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Canadaspis perfecta Walcott 1912
Or. †Protocaridida Simonetta and Delle Cave 1975
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G. †Branchiocaris Briggs 1976
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Or. †Waptiida Størmer 1942
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Fm. †Waptiidae Walcott 1912
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G. †Waptia Walcott 1912
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Waptia fieldensis Walcott 1912