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Ruby in Zoisite is a naturally formed mineral aggregate
" was a formidable hadrosaurid dinosaur from the Maastrichtian stage of the late Cretaceous
yet they remain some of the most important index fossils used by paleontologists
with eyes positioned high on the head
4.3" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Foot Print Ruby in Zoisite is aLocation: Francis Creek Shale Formation, Illinois Weight: 1 Pound 1. 5 Ounces Dimensions: 4. 9 Inches Long, 2. 7 Inches Wide, 1. 2 Inches Thick (Nodule) Leaf Dimensions: 4. 3 Inches Long, 1. 5 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
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US$ 347.50