4.3" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Foot Print Strombus bubonius (now commonly referred

Strombus bubonius (now commonly referred to as Persististrombus latus) is a fossil gastropod found in marine terrace deposits throughout the Mediterranean region of Spain

with eyes positioned high on the head

phylogenetic analysis places them as basal crurotarsans

300 million years ago

4.3" Pecopteris Fossil Leaves Mazon Creek Nodule Pennsylvanian Age Split-Pair Foot Print Strombus bubonius (now commonly referredLocation: 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