Some of the taxa: Caytonia, corystosperms, glossopterids, peltasperms, Callistophyton, Pentoxylon, and bennettitaleans are commonly included in the "seed ferns" (Pteridosperma), due to the position of the reproductive structures on leaves or leaf homologs, or assigned their own order within the seed plants.
(Some of the taxa; are commonly included; in the "seed ferns; due to the position of the reproductive structures on leaves or leaf homologs, or assigned their own order within the seed plants)
Some of the taxa
are commonly included
in the "seed ferns due to the position of the reproductive structures on leaves or leaf homologs, or assigned their own order within the seed plants