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Stem group: †"pteridosperms" (plant)
 Entity: 

Concise hierarchy

(Kingdom) Plantae - (Phylum) Tracheophyta - (Class) Spermatopsida

Phylogeny

Paraphyletic/Ancestral (para) Ref: K.M. Pryer et al., 2004: fig. 10.6.

Current position

Spermatopsida (Class) Ref: K.M. Pryer et al., 2004: fig. 10.6. [implicit]

Alternative positions

gymnosperms ([unranked]) Ref: K.M. Pryer et al., 2004: fig. 10.6.
spermatophytes ([unranked]) Ref: K.M. Pryer et al., 2004: fig. 10.6. [implicit]

Historical positions

spermatophytes ([unranked]) Ref: J. Cracraft & M.J. Donoghue, 2004: fig. 10.6. [implicit]
gymnosperms ([unranked]) Ref: K.M. Pryer et al., 2004: fig. 10.6.

Number of Subtaxa

2024 Available in Systema Naturae 2000 †1o;1g
©2004-2024 Universal Taxonomic Services
Last updated: 1 Feb 2024