1. Li HL (1956) A horticultural and botanical history of Ginkgo. Bull Morris Arboretum 7: 3–12
2. Meyen SV (1987) Fundamentals of palaeobotany. Chapman and Hall, London
3. Florin R (1949) The morphology of Trichopitys heteromorpha Saporta, a seed-plant of Palaeozoic age, and the evolution of the female flowers of the Ginkgoinae. Acta Horti Bergiani 15: 79–109
4. Emberger L (1944) Les plantes fossiles dans leurs rapports avec les végétaux vivants. Masson, Paris
5. Loconte H, Stevenson DW (1990) Cladistics of the Spermatophyta. Brittonia 42: 197–211