Concise hierarchy

(Kingdom) Plantae - (Phylum) Tracheophyta

Phylogeny

Total clade

Ref: P.D. Cantino et al., 2007: E20 ("total clade of /Cycadophyta").

Defined by included crown clade (and all taxa more closely related to it than to any other extant taxon)

Cycadophyta (Clade) Bessey 1907 [Cantino & Donoghue 2007]

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

Original position

Acrogymnospermae (Clade) Cantino & Donoghue 2007		Ref: P.D. Cantino et al., 2007: E19 ("cycads"), fig. 1. [implicit]
Spermatophyta (Clade) Britton & Brown 1896 [Crane & Kenrick 1997], nom. cl. inval.		Ref: P.D. Cantino et al., 2007: E18.

Original entries

†Antarcticycas (Genus) E.L. Smoot, T.N.Taylor & Delev. (1985)		Ref: P.D. Cantino et al., 2007: E20 ("e.g.").
Cycadophyta (Clade) Bessey 1907 [Cantino & Donoghue 2007]		Ref: P.D. Cantino et al., 2007: E20.
†Michelilloa (Genus) S.Archang. & D.W. Brett (1963)		Ref: P.D. Cantino et al., 2007: E20 ("e.g.").

Current position

Spermatophyta (Clade) Britton & Brown 1896 [Crane & Kenrick 1997], nom. cl. inval.

Ref: P.D. Cantino et al., 2007: E20. [new taxon]

Alternative positions

Acrogymnospermae (Clade) Cantino & Donoghue 2007

Ref: P.D. Cantino et al., 2007: fig. 1. [alternative position]

Historical positions

Spermatophyta (Clade) Britton & Brown 1896 [Crane & Kenrick 1997], nom. cl. inval.	Ref: P.D. Cantino et al., 2007: E18, E20, table 1 (p. [E]5); fig. 1. [new taxon]
Acrogymnospermae (Clade) Cantino & Donoghue 2007	Ref: P.D. Cantino et al., 2007: fig. 1. [alternative position]

Number of Subtaxa

2024

Available in Systema Naturae 2000

†2g