2.4" Annularia Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Coloborhynchus What made trilobites unique

What made trilobites unique

providing protection from rivals and prey

and fossil collections that value both beauty and deep-time history

Their fossils have been recovered from Montana’s Judith River Formation and corresponding formations in Alberta

2.4" Annularia Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Coloborhynchus What made trilobites uniqueLocation: Francis Creek Shale Formation, Illinois Weight: 6 Ounces Dimensions: 2. 9 Inches Long, 2. 3 Inches Wide, 0. 9 Inches Thick (Nodule) Leaf Dimensions: 2. 4 Inches Long, 2. 3 Inches Wide The item pictured is the one you will receive. Pensylvanian Age, 370 million years ago Annularia 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