On the finding of print samples and leafy branches of Bothrodendron punctatum Lindley et hutton, 1833 in the deposits of the Donetsk basin

The article presents an overview of the genus Bothrodendron Lindley et Hutton, 1833, which was quite rare in regional deposits, but widespread in the Euro-American supercontinent. The results of the study of the morphology of the ancient heterosporous lycopod Bothrodendron are presented, based on the materials of finds in the Middle Carboniferous deposits collected within the Donets Basin. A comparative analysis of the structural characteristics of Bothrodendron is presented based on the specimens identified as Bothrodendron punctatum Lindley J. and Hutton W., 1833 and Bothrodendron minutifolium (Boulay) Zeill. 1886, and arguments are put forward in favor of the conspecificity of the two mentioned species. Based on the study of new finds and literary sources, more detailed information on the features of the morphogenesis and structure of the shoot system of Borodendron is put forward. New morphological features and some morphometric characteristics of bothrodendron obtained as a result of studying the materials of Donetsk finds from the authors' collection are presented.