4.6" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Vaca Muerta forming the foundation of marble

forming the foundation of marble and limestone

Behavior: Likely bottom-dwellers (benthic)

000 degrees Celsius (54

Dragonflies rank among the most agile and fastest flying insects

Thorax: Formed by multiple articulated segments

4.6" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Vaca Muerta forming the foundation of marbleLocation: Francis Creek Shale Formation, Illinois Weight: 1 Pound 3. 9 Ounces Dimensions: 5. 9 Inches Long, 3. 5 Inches Wide, 0. 9 Inches Thick (Nodule) Leaf Dimensions: 4. 6 Inches Long, 3. 7 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