Excellent Museum Quality 4 1/4 X 2 1/8 Inch NEUROPTERIS Mazon Fossil N0002

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MAZON CREEK FOSSIL<br>NEUROPTERIS<br>MAZON CREEK FOSSIL<br>NEUROPTERIS<br>Your are bidding on a both halves of an iron stone concretion.  It has no repairs on it and you can see that it broke open nicely.  It is a 4 1/4 + long x 2  inch nodule of a  NEUROPTERIS fossil specimen.  This item was found in the Mazon Creek area in the 70s.<br>The preservation on this specimen is excellent museum quality with some slight mineralization.<br>If you look at this fossil under magnification, you will be able to see the hairs on the leaf<br>This fossil weighs 12 ounces.<br>This is both halves of a Mazon Creek nodule containing a fossil fern leaf,<br>NEUROPTERIS.<br>It is from the Mazon Creek fauna in the Francis Creek Shale They are Pennsylvanian (300 mya) in age. You will receive the one in the photo.  The nodule measures slightly over 3 inches long.  This would make a nice addition to any collection!<br>How the Mazon Creek Fossils Formed<br>Many animals lived in the shallow marine bays. More plants and animals lived in the swampy areas along the rivers. As animals in the bay died they fell to the bottom of the bay. They were joined by plants and animals that died along the river and were washed into the bays.<br>When the remains of these plants and animals sank to the bottom of the bays, they were rapidly buried by the mud washing in from the river(s). This process protected the remains from being destroyed. Bacteria began to decompose the plant and animal remains in the mud. The action of these bacteria produced carbon dioxide in the sediments around the remains. The carbon dioxide combined with iron from the groundwater around the remains forming siderite (ironstone). The siderite protected the remains from further damage.<br>The combination of rapid burial and rapid formation of siderite resulted in excellent preservation of the many animals and plants that ended up in the mud.<br>Questions? Send me email<br>Items are usually mailed within 24 hours of receipt of payment.<br>Please allow 1-10 days for shipping transit time as I have no control over the USPS!<br>Questions? Send me email!<br>