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The flower is staminate with globose anthers attached to individual filaments
The detail is excellent and it has a very pleasing color
The venter is slightly wider than that of P
It measures 5 cm
This specimen has no repair or restoration
Mazon Creek Fern P-MC-16-015 Beetle The flower is staminate withPecopteris 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