Mazon Creek Bivalve Fossil - Mazonmya mazonesis SOLD 1.87" graptolite which lived over 440 million

which lived over 440 million years ago

These echinoids first appeared in oceans 450 million years ago

70 million years ago

MANHATTAN PROJECT (SHIELD WINDOW)

95" Cyclobatis fossil

Mazon Creek Bivalve Fossil - Mazonmya mazonesis SOLD 1.87" graptolite which lived over 440 million300,000,000 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 and animals that were preserved for millions of years. This specimen is a Mazonmya mazonesis bivalve fossil, measuring 1. 87", that was recovered from Mazon Creek in Illinois.