Tham khảo Dương xỉ hạt

  1. ↑ Rothwell G. W.; Scheckler S. E.; Gillespie W. H. (1989). “Elkinsia gen. nov., a Late Devonian gymnosperm with cupulate ovules”. Botanical Gazette. 150: 170–189. doi:10.1086/337763.
  2. ↑ 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. 95: 465–471. doi:10.3732/ajb.95.4.465. PMID 21632371.
  3. ↑ Potonié, H. (1899). Lehrbuch der Pflanzenpaläontologie. Berlin.
  4. ↑ Oliver F. W.; Scott D. H. (1904). “On the structure of the Palaeozoic seed Lagenostoma Lomaxi, with a statement of the evidence upon which it is referred to Lyginodendron”. Philosophical Transactions of the Royal Society of London, Series B. 197: 193–247. doi:10.1098/rstb.1905.0008.
  5. ↑ Grand'Eury C (1904). “Sur les graines Neuropteridées”. Comptes rendus de l'Académie des Sciences, Paris. 140: 782–786.
  6. ↑ Kidston R (1904). “On the fructification of Neuropteris heterophylla, Brongniart”. Philosophical Transactions of the Royal Society of London, Series B. 197: 1–5. doi:10.1098/rstb.1905.0001.
  7. ↑ White D (1904). “The seeds of Aneimites”. Smithsonian Institution, Miscellaneous Collection. 47: 322–331.
  8. ↑ Hilton, J.; Bateman, R. M. (2006), “Pteridosperms are the backbone of seed-plant phylogeny”, Journal of the Torrey Botanical Society, 33: 119–168, doi:10.3159/1095-5674(2006)133[119:PATBOS]2.0.CO;2 Đã bỏ qua tham số không rõ |lastauthoramp= (gợi ý |name-list-style=) (trợ giúp)
  9. ↑ Novíkov & Barabaš-Krasni (2015). “Modern plant systematics”. Liga-Pres: 685. doi:10.13140/RG.2.1.4745.6164. ISBN 978-966-397-276-3. Chú thích journal cần |journal= (trợ giúp)
  10. ↑ Anderson, Anderson & Cleal (2007). “Brief history of the gymnosperms: classification, biodiversity, phytogeography and ecology”. Strelitzia. SANBI. 20: 280. ISBN 978-1-919976-39-6.