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Graham, Linda E.; Cook, Martha E.; Hanson, David T.; Pigg, Kathleen B.; Graham, James M. (2010). "Rolled liverwort mats explain major Prototaxites features: Response to commentaries". American Journal of Botany. 97 (7): 1079-1086. doi:10.3732/ajb.1000172. PMID21616860.
Taylor, Thomas N.; Taylor, Edith L.; Decombeix, Anne-Laure; Schwendemann, Andrew; Serbet, Rudolph; Escapa, Ignacio; Krings, Michael (2010). "The enigmatic Devonian fossil Prototaxites is not a rolled-up liverwort mat: Comment on the paper by Graham et al.(AJB 97: 268–275)". American Journal of Botany. 97 (7): 1074-1078. doi:10.3732/ajb.1000047. PMID21616859.
Cocks, L. Robin M.; Torsvik, Trond H., (Ed.) (2016), "Devonian", Earth History and Palaeogeography, Cambridge: Cambridge University Press, ss. 138-158, doi:10.1017/9781316225523.009, ISBN978-1-316-22552-3, 2 Haziran 2018 tarihinde kaynağından arşivlendi, erişim tarihi: 24 Temmuz 2022