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harsh climates of the Ice Age
Probably an excellent Daspletosaurus tooth
key to understanding Paleozoic marine ecosystems
trilobites thrived in Earth’s ancient oceans and became one of the most characteristic life forms of the Paleozoic Era
4.2" Macroneuropteris Fossils Leaf Mazon Creek Nodule Pennsylvanian Age Split-Pair Epidote harsh climates of the IceLocation: Francis Creek Shale Formation, Illinois Weight: 11. 9 Ounces Dimensions: 4. 7 Inches Long, 2. 6 Inches Wide, 1 Inch Thick (Nodule) Leaf Dimensions: 4. 2 Inches Long, 1. 3 Inches Wide The item pictured is the one you will receive. Pensylvanian Age, 370 million years ago Macroneuropteris Fossil Leaf The Mazon Creek fossils date back to the Pennsylvanian sub period (roughly 307 million years ago). During this time, the area was a tropical delta
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