Mazon Creek Fossil Plant Concretions Size:Medium Above: Black

Above: Black

ℹ️ If you’re wondering what that big rock is in the center of the picture

This specimen is a Chelyabinsk meteorite fragment

combining them with copper

sharp teeth

Mazon Creek Fossil Plant Concretions Size:Medium Above: Black300,000,000 years ago, in the Carboniferous Period, Earth was a dense tropical jungle. Lush forests were home to all manner of prehistoric creatures and swampy landscapes covered the surface. We know of this incredible time thanks to the fossil imprints left behind by plants that were preserved for millions of years. This specimen is a split pair fossil plant concretion that was recovered from Mazon Creek in Illinois. This former coal mine turned