Servais, T., Cascales-Miñana, B., Cleal, C. J., Gerrienne, P., Harper, D. A. T., & Neumann, M. (2019).
Revisiting the great Ordovician diversification of land plants: Recent data and perspectives. Palaeogeography,
Palaeoclimatology, Palaeoecology, 534: 109280. doi:10.1016/j.palaeo.2019.109280.