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the skeletal remains of once-living coral polyps
Western Sahara's desert sands preserved this messenger from the asteroid belt
The complex suture patterns where the septa met the shell wall are a defining characteristic used by scientists to identify and classify ammonite species
and ecology of early freshwater and terrestrial life
6" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Ichthyodectes the skeletal remains of once-livingLocation: Llewellyn Formation, St Clair, Pennsylvania Weight: 6. 6 Ounces Dimensions: 6 Inches Long, 4 Inches Wide, 0. 6 Inches Thick (Plate) Comes with a Certificate of Authenticity. Comes with a Free Stand. The item pictured is the one you will receive. Pennsylvanian Age, 300 million years old. Alethopteris Sp Fern Fossil The fossil plants of the Llewellyn Formation represent some of the most visually striking examples of Carboniferous vegetation
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