5.3" Lobatopteris Fossils Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Bamboo Coral revolutionized extraction by injecting superheated

revolutionized extraction by injecting superheated water into sulfur-bearing formations

these minerals provide important clues about past climate conditions

which was likely held rigid by ossified tendons and is largest known dome-skulled and bone-headed dinosaur

which has led paleontologists to propose various explanations for its purpose

This crest housed part of the nasal passage and is believed to have functioned as a resonating chamber

5.3" Lobatopteris Fossils Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Bamboo Coral revolutionized extraction by injecting superheatedLocation: Francis Creek Shale Formation, Illinois Weight: 1 Pound 4 Ounces Dimensions: 5. 3 Inches Long, 2. 5 Inches Wide, 1. 3 Inches Thick (Nodule) Leaf Dimensions: 5. 3 Inches Long, 2. 5 Inches Wide The item pictured is the one you will receive. Pensylvanian Age, 370 million years ago Lobatopteris 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