↑Gray, J.; Chaloner, W.G.; Westoll, T.S. (1985), "The Microfossil Record of Early Land Plants: Advances in Understanding of Early Terrestrialization, 1970-1984 [and Discussion]", Philosophical Transactions of the Royal Society B: Biological Sciences, 309 (1138): 167–195, Bibcode:1985RSPTB.309..167G, doi:10.1098/rstb.1985.0077{{citation}}: Unknown parameter |lastauthoramp= ignored (|name-list-style= suggested) (help)
↑Rubinstein, C.V.; Gerrienne, P.; De La Puente, G.S.; Astini, R.A.; Steemans, P. (2010), "Early Middle Ordovician evidence for land plants in Argentina (eastern Gondwana)", New Phytologist, 188 (2): 365–9, doi:10.1111/j.1469-8137.2010.03433.x, PMID20731783{{citation}}: Unknown parameter |lastauthoramp= ignored (|name-list-style= suggested) (help)