Concise hierarchy

(Kingdom) Plantae - (Phylum) Tracheophyta

Phylogeny

Node-based clade		Ref: P.D. Cantino et al., 2007: E19 ("node-based").
Crown clade		Ref: P.D. Cantino et al., 2007: E19. [inferred]
Reference phylogeny [PhyloCode]		Ref: P.D. Cantino et al., 2007: E19 ("Hill & al. (2003: Figs. 9, 10). See also Crane (1988: Fig. 5.7), Stevenson (1990: 49-51), Treutlein & Wink (2002), Rai & al. (2003: Fig. 2), Bogler & Francisco-Ortega (2004), Chaw & al. (2005), and Hermsen & al. (2006).").

Defined by the most recent common ancestor (and all its descendants) of

Cycas circinalis L. (1753)		Ref: P.D. Cantino et al., 2007: E19.
Zamia floridana A.DC. (1868)		Ref: P.D. Cantino et al., 2007: E19.

Included, by definition, in total clade

Pan-Cycadophyta (Clade) Cantino & Donoghue 2007

Ref: P.D. Cantino et al., 2007: E20.

Original position

Pan-Cycadophyta (Clade) Cantino & Donoghue 2007

Ref: P.D. Cantino et al., 2007: E20.

Original entries

Cycadineae (Suborder)		Ref: P.D. Cantino et al., 2007: E19 ("sensu Stevenson (1992)").
Zamiineae (Suborder)		Ref: P.D. Cantino et al., 2007: E19 ("sensu Stevenson (1992)").

Current position

Pan-Cycadophyta (Clade) Cantino & Donoghue 2007

Ref: P.D. Cantino et al., 2007: E19. [new rank]

Historical positions

Pan-Cycadophyta (Clade) Cantino & Donoghue 2007

Ref: P.D. Cantino et al., 2007: E19-E20, table 1 (p. [E]5), fig. 1. [new rank]