Classification of the genus Cycadeoidea
G. †Cycadeoidea Buckland 1828
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†Cycadeoidea aspera Ward 1898
†Cycadeoidea bibbinsi Ward 1897
†Cycadeoidea cicatricula Ward 1898
†Cycadeoidea clarkiana Ward 1905
†Cycadeoidea colei Ward 1898
†Cycadeoidea colossalis Ward 1898
†Cycadeoidea dacotensis Ward
†Cycadeoidea dartoni Wieland 1916
†Cycadeoidea emmonsi Fontaine 1883
†Cycadeoidea excelsa Ward 1898
†Cycadeoidea fisherae Ward 1905
†Cycadeoidea fontaineana Ward 1897
†Cycadeoidea formosa Ward 1898
†Cycadeoidea furcata Ward 1898
†Cycadeoidea goucheriana Ward 1897
†Cycadeoidea heliochorea Ward 1900
†Cycadeoidea ingens Ward 1898
†Cycadeoidea insoleta Ward 1898
†Cycadeoidea jenneyana Ward 1894
†Cycadeoidea marshiana Ward 1898
†Cycadeoidea marylandica Fontaine 1889
†Cycadeoidea mcbridei Ward 1898
†Cycadeoidea mcgeeana Ward 1897
†Cycadeoidea megalophylla Buckland 1828
†Cycadeoidea minima Ward 1900
†Cycadeoidea minnekahtensis Ward 1898
†Cycadeoidea mirabilis Lesquereux 1875
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Invalid names: Cycadeoidea zamiostrobus Solms 1892 [synonym]
†Cycadeoidea munita Cragin 1889
†Cycadeoidea nana Ward 1898
†Cycadeoidea nigra Ward 1900
†Cycadeoidea occidentalis Ward 1898
†Cycadeoidea paynei Ward 1898
†Cycadeoidea protea Ward 1900
†Cycadeoidea pulcherrima Ward 1898
†Cycadeoidea reticulata Ward 1900
†Cycadeoidea rhombica Ward 1900
†Cycadeoidea stantoni Ward 1905
†Cycadeoidea stillwelli Ward 1898
†Cycadeoidea superba Ward 1900
†Cycadeoidea turrita Ward 1898
†Cycadeoidea tysoniana Ward 1897
†Cycadeoidea uddeni Wieland 1916
†Cycadeoidea uhleri Ward 1897
†Cycadeoidea wellsii Ward 1898
†Cycadeoidea wielandi Ward 1899