- Cycadeoidea aspera
- Cycadeoidea barti
- Cycadeoidea bibbinsi
- Cycadeoidea cicatricula
- Cycadeoidea clarkiana
- Cycadeoidea colei
- Cycadeoidea colossalis
- Cycadeoidea dacotensis
- Cycadeoidea dartoni
- Cycadeoidea emmonsi
- Cycadeoidea etrusca
- Cycadeoidea excelsa
- Cycadeoidea fisherae
- Cycadeoidea fontaineana
- Cycadeoidea formosa
- Cycadeoidea furcata
- Cycadeoidea gibsoniana
- Cycadeoidea goucheriana
- Cycadeoidea heliochorea
- Cycadeoidea ingens
- Cycadeoidea insolita
- Cycadeoidea jenneyana
- Cycadeoidea marshiana
- Cycadeoidea marylandica
- Cycadeoidea mcbridei
- Cycadeoidea mcgeeana
- Cycadeoidea microphylla
- Cycadeoidea minima
- Cycadeoidea minnekahtensis
- Cycadeoidea munita
- Cycadeoidea nana
- Cycadeoidea nigra
- Cycadeoidea occidentalis
- Cycadeoidea paynei
- Cycadeoidea protea
- Cycadeoidea pulcherrima
- Cycadeoidea reticulata
- Cycadeoidea saxbyana
- Cycadeoidea scotti
- Cycadeoidea stantoni
- Cycadeoidea sternbergii
- Cycadeoidea stillwelli
- Cycadeoidea superba
- Cycadeoidea turrita
- Cycadeoidea tysoniana
- Cycadeoidea uhleri
- Cycadeoidea utopiensis
- Cycadeoidea wellsii
- Cycadeoidea wielandi