1. T. V. Alekseeva, “Rhizoliths in Devonian and Early Carboniferous paleosols and their paleoecological interpretation,” Eurasian Soil Sci. 53 (4), 405–419 (2020). https://doi.org/10.1134/S106422932004002X
2. M. P. Aref’ev and S. V. Naugol’nykh, “Isolated roots from the Tatarian stage of the Sukhona and Malaya Northern Dvina River basins,” Paleontol. Zh., No. 1, 86–99 (1998).
3. O. A. Orlova, A. L. Jurina, and N. V. Gordenko, “First finding of Archaeopteridaceae wood in the Upper Devonian deposits of the Middle Timan Region,” Moscow Univ. Geol. Bull. 66 (5), 341–347 (2011).
4. L. G. Tarshis, Anatomy of Underground Organs of Higher Vascular Plants (Ural. Otd. Ross. Akad. Nauk, Yekaterinburg, 2007) [in Russian].
5. Al. A. Fedorov, M. E. Kirpichnikov, and Z. T. Artyushenko, Atlas of Descriptive Morphology of Higher Plants. Stem and Root (Izd. Akad. Nauk SSSR, Moscow–Leningrad, 1962) [in Russian].