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using their finned tails for propulsion and small webbed feet for steering
the skeletal remains of once-living coral polyps
and ecology of early freshwater and terrestrial life
and feeding strategies
they ultimately faced extinction during the Cretaceous-Tertiary mass extinction event
6" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Ichthyodectes using their finned tails forLocation: 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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