Order Cycadales Dumortier 1829 (cycads)
PaleoDB taxon number: 55349
Parent taxon: Cycadopsida according to A. B. Doweld 2001
Sister taxa: Boweniaceae, Crassofilicites, Deltolepis, Dioales, Dioonites, Drepanozamites, Gnetales, Lagenostomales, Manebachia, Marantoidea, Orthogoniopteris, Pteridospermales, Rhabdotaenia, Sewardioxylon, Stangeriaceae, Strangerites, Trigonocarpales, Welwitschiales
Subtaxa: Amuriella, Anthrophyopsis, Apoldia, Archaeocycas, Aricycas, Beaniaceae, Behuninia, Bucklandia, Bureja, Cavamonocolpites, Crossozamiaceae, Cycadaceae, Cycadenia, Cycadospadix, Dirhopalostachyaceae, Eucommiidites, Haitingeria, Heilungia, Mesosingeria, Michelilloa, Nikania, Nilsonia, Nilssoniaceae, Paracycas, Phasmatocycas, Pleiotrichium, Sarmatiella, Sueria, Taeniopteris, Zamiaceae