Kingdom [Plantae] Haeckel (1866) - plants Division Pteridophyta Schimp. (1879) see Subphylum Pteridophytina (Eichler) Cavalier-Sm. (1998) Class †Progymnospermopsida Beck (1960) see Clade Pan-Spermatophyta Cantino & Donoghue 2007 [Cantino, Doyle & Donoghue 2020] Order †Aneurophytales Beck (1957) Family †Protokalonaceae C.J.Cleal & B.A.Thomas (1995), orth. inval. see Family Proteokalonaceae P.D.W.Barnard & A.G. Long (1975)