6" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Grape Agate from Baja California to the

from Baja California to the Pacific Northwest

contain a central skeletal core and radiating internal walls that create the signature honeycomb appearance visible on fossil surfaces

the fossil documents marine arthropod morphology from the mid-Mesozoic era

similar to many modern surface-feeding fish

large fish

6" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Grape Agate from Baja California to theLocation: 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