Cycadophyta: Perbedaan antara revisi

Posisi marga dalam klasifikasi, menurut Nagalingum ''et al''. (2011):<ref>{{Cite namejournal|last="Nagalingum2011"Nagalingum|first=, N. S.; Marshall, C. R.; Quental, T. B.; Rai, H. S.; Little, D. P.; Mathews, S.|date=2011|title=Recent synchronous radiation of a living fossil|journal=Science|volume=334|issue=6057|pages=796–799|doi=10.1126/science.1209926}}</ref>