Through the Ages Posted on August 15, 2014 by Maggie Beck 0 Fresh shale-fall. Lepidodendron (Carboniferous Period, approx. 310-325 million years ago). Small rounded granite stones that must predate the fossil, based on the amount of erosion. A still life window into eons past, taken in the very present, and published on the internet, where it should last for quite some time in the future. Isn’t time amazing?