Mazon Creek Shrimp Molt - 1.36" pietersite They first appeared in the

They first appeared in the fossil record at the beginning of the Cretaceous Period 145

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containing the oldest known material at 4

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4448 (1980)

Mazon Creek Shrimp Molt - 1.36" pietersite They first appeared in the300,000,000 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 shrimp molt fossil, measuring 1. 36", that was recovered from Mazon Creek in Illinois. This former coal