300 million year old fossil plant remains of fast-growing ferns and trees. In th…

300 million year old fossil plant remains of fast-growing ferns and trees. In the jungle-like growth, the huge ferns were most common. They had fronds 5-6 feet long and grew more than 50 feet. Along with them were seed ferns, now extinct, and giant scouring rushes, descendants of which are the small horsetail rushes that live today along our wooded streams. Neuropteris and Pecopteris are from the seed ferns Sphenophyllum and Annularia were common (Pennsylvanian. Carboniferous period.)

Source by caityrosem