Carboniferous coal was produced by bark-bearing trees that grew in vast lowland swamp forests. Vegetation included giant club mosses, tree ferns, great horsetails, and towering trees with strap ...

In fact, ferns grew prolifically in the Carboniferous period that occurred millions of years ago. However, for the modern-day ...

Machado studied the stratigraphy and palynological floras of the Buçaco Carboniferous Basin ... light on the adaptations and evolution of ferns during a time of climatic shifts.