Above is an image of a tree fern frond plant fossil called  Diplazites unita (Brongniart, 1822) Cleal, 2015 .  This plant fossil dates to ...

  Above is an image of a horsetail trunk plant fossil called  Calamites sp.  This plant fossil dates to the Carboniferous (Pennsylvanian) Pe...

  This picture is of  what I think is a  Paraconularia missouriensis?  (Swallow, 1860) fossil. It existed in the Mississippian Period. The f...