4.3" Pecopteris Fontainei Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Mammoth Fossil records and mineral studies

Fossil records and mineral studies indicate that quartz has played a critical role in human civilization

offering valuable insights into its anatomy

The last known populations likely vanished around 1

Halisaurus followed a different evolutionary path

brontotheres gradually evolved and diversified

4.3" Pecopteris Fontainei Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Mammoth Fossil records and mineral studiesLocation: Francis Creek Shale Formation, Illinois Weight: 14. 3 Ounces Dimensions: 4. 3 Inches Long, 3. 7 Inches Wide, 0. 8 Inches Thick (Nodule) Leaf Dimensions: 4. 3 Inches Long, 3. 7 Inches Wide The item pictured is the one you will receive. Pensylvanian Age, 370 million years ago Pecopteris Fontainei Fossil Leaves The Mazon Creek fossils date back to the Pennsylvanian sub period (roughly 307 million years ago). During this time, the area was a