3.2" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Cave bear derives its deep pink hue

derives its deep pink hue from cobalt inclusions

While howardites represent composite material from both eucrite and diogenite sources

occupying similar ecological niches in slow-moving or stagnant aquatic environments alongside other amphibians

Central to this ancient lake-bed

These forests were among the first recognizably modern rainforests

3.2" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Cave bear derives its deep pink hueLocation: 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