Paleobotanical story of a fossil plant : Sigillaria

A paleobotanical story that you have probably never heard before. Alexis Ratier travels through the late Carboniferous with some fossils that he collected throughout his bachelor in Geosciences. These fossils will be a glimpse of an old tree-like lycophyte called Sigillaria (Lepidophytes). This short video is its story.
https://www.youtube.com/watch?v=1d-dyKkpfJo