Dimichele, W.A. et al. 2020. A Middle Pennsylvanian (early Asturian) tropical dry forest, Atokan-Desmoinesian boundary, Illinois Basin, USA. Spanish Journal of Palaeontology. 31, 1 (abr. 2020), 41–84. DOI:https://doi.org/10.7203/sjp.31.1.17139.