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Fossil Lake contains the world’s largest concentration of fossil fish
They are easily identified by their distinctive shell shape and the presence of three to four cardinal teeth on each valve
foraging through snow
This rooted tooth specimen exemplifies the sophisticated adaptations that established Basilosaurus as a dominant Eocene predator
Although only part of this ancient lake remains exposed today
3.4" Lepidodendron Fossil Mark Mazon Creek Nodule Pennsylvanian Age Illinois Camarasaurus Fossil Lake contains the world’sLocation: Francis Creek Shale Formation, Illinois Weight: 6. 2 Ounces Dimensions: 3. 4 Inches Long, 2. 4 Inches Wide, 0. 8 Inches Thick (Nodule) Leaf Dimensions: 3. 4 Inches Long, 2. 4 Inches Wide The item pictured is the one you will receive. Pensylvanian Age, 370 million years ago Lepidodendron Fossil Bark The Mazon Creek fossils date back to the Pennsylvanian sub period (roughly 307 million years ago). During this time, the area was a tropical
