3.7" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Celestite while the inner chambers were

while the inner chambers were filled with gas or fluid to maintain buoyancy control

sharing ecosystems where survival depended on both size and numbers

the last phase of the Cretaceous period

where a small number eventually intersected Earth’s orbit and survived atmospheric entry

4 meters high at the hip

3.7" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Celestite while the inner chambers wereLocation: Llewellyn Formation, St Clair, Pennsylvania Weight: 2. 4 Ounces Dimensions: 3. 7 Inches Long, 3. 5 Inches Wide, 0. 3 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 found in the Llewellyn Formation are among the most visually striking examples of Carboniferous plant