After Cleal & Rees, 2003
<==o †Peltaspermales |-- †Peltaspermaceae `--o †Corystospermaceae |--o †Ctenozamites Nathorst, 1886 emend. Harris, 1964 | |-- †C. cycadea (Berger, 1832) Schenk, 1887 [C. bergeri (Göppert) Nathorst, 1886] | `-- †C. leckenbyi (Bean ex Leckenby) Nathorst, 1886 emend. Harris, 1964 |-- †Ptilozamites Nathorst |-- †Harrisothecium Lundblad, 1961 |--o †Pachypteris Brongniart, 1828a emend. Harris, 1964 [Thinnfeldia Ettingshausen, 1852] | |-- †P. lanceolata Brongniart, 1829 | |-- †P. papillosa (Thomas & Bose) [Pteroma thomasii Harris (male)] | |-- †P. rhomboidalis (Ettingshausen) Nathorst [Umkomasia franconica Kirchner & Müller (female); Pteruchus septentrionalis Kirchner & Müller (male)] | `-- †P. macrophylla [Hymenophyllites macrophyllus; Pachypteris desmomera (de Saporta) Barale] `--o †Komlopteris Barbacka, 1994 |-- †K. nordenskioeldii (Nathorst) Barbacka |-- †K. speciosa (Ettingshause, 1852) Cleal & Rees, 2003 `-- †K. cenozoicus McLoughlin, Carpenter, Jordan & Hill, 2008; Pal. SEAust.
Reference(s):
- Cleal, C. J. & Rees, P. M., 2003: The Middle Jurassic Flora from Stonesfield, Oxfordshire, UK.
–Palaeontology: Vol. 46, #4, pp. 739-801
- McLoughlin, S., Carpenter, R. J., Jordan, G.J. & Hill, R. S., 2008: Seed ferns survived the end-Cretaceous mass extinction in Tasmania.
–American Journal of Botany: Vol. 95, pp. 465-471 [from abstract]