3.2" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Bryozoan making them some of the

making them some of the most important fossils for understanding early marine evolution

Typically black or dark brown

Size: Between 2

It forms readily near the planet’s surface and serves as a primary building material for many marine organisms

3.2" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Bryozoan making them some of theLocation: Francis Creek Shale Formation, Illinois Weight: 9. 5 Ounces Dimensions: 3. 8 Inches Long, 3. 1 Inches Wide, 0. 7 Inches Thick (Nodule) Leaf Dimensions: 3. 2 Inches Long, 3 Inches Wide The item pictured is the one you will receive. Pensylvanian Age, 370 million years ago Pecopteris 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 tropical delta