Mazon Creek Coprolite Fossil - 2.33" mmj-hq-kk With her landing in Derry

With her landing in Derry

Hackmanite

it was filled with aquatic animals like ammonites

29" at the tallest point

The red expansion joint specimen is enclosed in an acrylic cube with a magnified lid and includes a glass-topped display case

Mazon Creek Coprolite Fossil - 2.33" mmj-hq-kk With her landing in Derry300,000,000 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 2. 33", that was recovered from Mazon Creek in Illinois.