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It is an aquatic insect that had a very light-weight body and long legs that allow them to live on the surface of the water
kerrii are deciduous
and the petals are 3-7 and are spatulate
placing it as Theropoda incertae sedis
Mazon Creek Fern P-MC-16-013 Carnivorous Dinosaur It is an aquatic insectAnnularia 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