Peltaspermales [SEP] parent taxon
Peltaspermales
The Peltaspermales are an extinct order of plants belonging to Pteridospermatophyta, or seed ferns. It is unclear whether they form a natural group of organisms as they are poorly known. It has been suggested that they survived the Cretaceous–Paleogene extinction event.
gigantopterids are a non-monophyletic form taxon. Plant life from their era is very difficult to document and organize. They have been variously allied with the "seed ferns" (another paraphyletic group of early seed plants) Peltaspermales and Callistophytales, "Gnetum", and the Magnoliophyta. All that can be said at present is that they were spermatophytes. It is also highly unlikely that they were close relatives of gymnosperms, cycads or ginkgos, because these lineages were already established and distinct in the Late Permian.
Vegetative leaves