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The detail is excellent and it has a very pleasing color
though they do not emit light
The ammonite is 8
It measures 5 cm
forming a gynostemium
Mazon Creek Fern P-MC-16-015 Beetle The detail is excellent andPecopteris sp. Carbondale Formation Middle Pennsylvanian Grundy County, Illinois Complete siderite nodule with a very well preserved fern frond. The Mazon Creek area fossils are found mostly in siderite concretions. The concretions are found in the Francis Creek Shale Member within the Carbondale Formation of the Kewanee Group. The best nodules are a by product of coal strip mining operations. The age of the fossil plants is Desmoinesian, Middle
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