Kelas : Cycadopsida
Order :
Cycadales
Family
: Cycadaceae - Saikad
Family : Stangeriaceae - Setangeri
Family : Zamiaceae - Zamia
Order : †Medullosales
Family
: †Potonieaceae
Family : †Alethopteridaceae
Family : †Stephanospermaceae
Family : †Codonospermaceae
Family : †Polylophospermaceae
Cycadophyta – Saikad
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