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loginHere we have some of my garden rocks. Let's have a closer look at that one in the foreground, shall we?
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loginIt is about four inches long and surprisingly, you can open it up.
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loginInside of the rock is a fern fossil, approximately 300 million years old and still counting. It is a long extinct Pecopteris fern and it grew in Mazon Creek, Pennsylvania when the area was very swampy, and hot. More like the tropics, oddly enough. The present day continents of the earth weren't around back then. There was only one large super continent and scientists call it Pangea. Over millions of years, the super continent broke up and became our present day group of continents. Interestingly, you can see a live fern at the top of the photo.