7.2" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Moroccops Comparing this to the approximately
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7.2" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Moroccops Comparing this to the approximately Comparing this to the approximately twenty eggs in each Hypacrosaurus nest suggests that these dinosaurs bred at a high rate to offset significant mortality slender body and powerful tail suggest it was a skilled swimmer 2 Inches Long The fossilization process began with pyrite replacing the plant tissues