Opinions from T. N. Taylor et al. 2009
- 'Adiantites belongs to Calamopityaceae'
- 'Aneurophyton belongs to Aneurophytales'
- 'Archaeosigillaria belongs to Lycopodiophyta'
- 'Barinophyton belongs to Zosterophyllopsida'
- 'Calamophyton belongs to Pseudosporochnales'
- 'Chlidanophyton belongs to Rhacophytales'
- 'Cladoxylon belongs to Pseudosporochnales'
- 'Cladoxylopsida belongs to Moniliformopses'
- 'Dutoitia belongs to Plantae'
- 'Ellesmeris belongs to Rhacophytales'
- 'Eocladoxylon belongs to Rhacophytales'
- 'Eospermatopteris belongs to Pseudosporochnales'
- 'Eviostachya belongs to Sphenophyllales'
- 'Flabellofolium belongs to Plantae' according to Stone 1973
- 'Haplostigma belongs to Pteridophyta'
- 'Hierogramma belongs to Pseudosporochnales'
- 'Hyenia belongs to Pseudosporochnales'
- 'Lagenospermum belongs to Pteridospermophyta'
- 'Leptophloeum belongs to Lycopodiophyta'
- 'Lorophyton belongs to Pseudosporochnales'
- 'Lycopodiophyta belongs to Plantae' according to P. D. Cantino and M. J. Donoghue 2007
- 'Lycopodiopsida belongs to Lycopodiophyta'
- 'Pietzschia belongs to Pseudosporochnales'
- 'Platyphyllum is replaced by Flabellofolium' according to Stone 1973
- 'Polyxylon belongs to Pseudosporochnales'
- 'Praeramunculus belongs to Progymnospermopsida'
- 'Protocephalopteris belongs to Rhacophytales' according to Ananiev 1960
- 'Protopityales belongs to Tracheophyta'
- 'Protopteridophyton belongs to Rhacophytales'
- 'Pseudosporochnales belongs to Cladoxylopsida'
- 'Pseudosporochnus belongs to Pseudosporochnales'
- 'Rhacophytales belongs to Pteridophyta'
- 'Rhacophyton belongs to Rhacophytales' according to Leclercq 1951
- 'Rhymokalon belongs to Pseudosporochnales'
- 'Sphenophyllaceae belongs to Sphenophyllales'
- 'Sphenophyllales belongs to Equisetopsida'
- 'Sphenophyllum belongs to Sphenophyllaceae'
- 'Wattieza belongs to Pseudosporochnales'
- 'Xenocladia belongs to Pseudosporochnales'