Classification of the family Cordaitanthaceae

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G. †Cordaitanthus Feistmantel 1876
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†Cordaitanthus communis Feistmantel 1876
G. †Gothania Hirmer 1933
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†Gothania westfalica Hirmer 1933
G. †Mitrospermum Arber 1910
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†Mitrospermum compressum Williamson 1910
G. †Nucellangium Andrews, Jr. 1949
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†Nucellangium glabrum Andrews, Jr. 1949