Concise hierarchy

(Kingdom) Plantae - (Phylum) Tracheophyta

Phylogeny

Total clade

Ref: P.D. Cantino et al., 2007: E22 ("total clade of /Gnetophyta").

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

Gnetophyta (Clade) Bessey 1907 [Donoghue, Doyle & Cantino 2007], nom. cl. inval.

Ref: P.D. Cantino et al., 2007: E22.

Original position

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

Original entries

Gnetophyta (Clade) Bessey 1907 [Donoghue, Doyle & Cantino 2007], nom. cl. inval.

Ref: P.D. Cantino et al., 2007: E22.

Current position

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

Ref: P.D. Cantino et al., 2007: E22. [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, E22, 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

2007

P.D. Cantino et al.: E22

[3g]