After Earle, 2002, Cleal & Rees, 2003, Ge, Lydon & Watson, 2003, and Lydon, Watson & Harrison, 2003
<==o Ginkgoales (neidonhiuspuut; ginkgos) |?- †Baiera |?- †Ginkgoides |?-o †Sphenobaiera Florin, 1936 emend. Harris & Millington, 1974 | |-- †S. spectabilis (Nathorst, 1906) [Baiera spectabilis Nathorst, 1906] | |--o †S. ikorfatensis (Seward, 1926) Florin, 1936 [Baiera ikorfatensis Seward, 1926] | | `-- †S. ikorfatensis forma papillata | |-- †S. ophioglossum Harris & Millington, 1974 | |-- †S. longifolia (Pomel) Florin, 1936 | |-- †S. pulchella (Heer) Florin, 1936 | |-- †S. gyron Harris & Millington, 1974 | `-- †S. uninervis |?-o †Karkeniaceae | `-- †"Ginkgoides" tigrensis Archangelsky, 1965 `--o Ginkoaceae Engler, 1897 (neidonhiuspuut; ginkgos; maidenhairtrees) `--o Ginkgo Linnaeus, 1771 |-- †G. latifolius (Phillips) Harris, in Harris et al., 1974 |-- †G. adiantoides |-- †G. coriacea `-- G. biloba Linnaeus, 1771 (neidonhiuspuu; maidenhairtree)
Reference(s):
- Cleal, C. J. & Rees, P. M., 2003: The Middle Jurassic Flora from Stonesfield, Oxfordshire, UK.
–Palaeontology: Vol. 46, #4, pp. 739-801 - Earle, C. J., 2002-: Ginkgoales
–iNet: The Gymnosperm Database: http://www.conifers.org - Ge, S., Lydon, S. J. & Watson, J., 2003: Sphenobaiera ikorfatensis (Seward) Florin from the Lower Cretaceous of Huolinhe, eastern Inner Mongolia, China.
–Palaeontology: Vol. 46, #2, pp. 423-430 - Lydon, S. J., Watson, J. & Harrison, N. A., 2003: The lectotype of Sphenobaiera ikorfatensis (Seward) Florin, a ginkgophyte from the Lower Cretaceous of western Greenland.
–Palaeontology: Vol. 46, #2, pp. 413-421