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These fossils are invaluable to paleobotanists studying plant diversity
Mature specimens typically measured up to nine meters in length
Its flexible locomotion made it well-adapted to the diverse ecosystems of prehistoric North America
“Stone of Heaven
helping paleontologists understand how Tyrannosaurus rex developed from juvenile to apex predator
4.1" Neuropteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Grposaurus These fossils are invaluable toLocation: Francis Creek Shale Formation, Illinois Weight: 1 Pound 13. 3 Ounces Dimensions: 4. 8 Inches Long, 3. 8 Inches Wide, 2 Inches Thick (Nodule) Leaf Dimensions: 4. 1 Inches Long, 1. 6 Inches Wide The item pictured is the one you will receive. Pensylvanian Age, 370 million years ago Neuropteris 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