10.1" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Mako including the Lusitanian Basin

including the Lusitanian Basin

and ancient climates

They first appeared 25 million years before the earliest dinosaurs and long before the rise of birds and mammals

with each coral chamber shaped in a distinctive hexagonal pattern

a lineage of apex carnivores that flourished during the Late Triassic epoch between 237 and 201 million years ago

10.1" Alethopteris Fern Plant Leaf Fossil Carboniferous Age Llewellyn FM ST Clair, PA Mako including the Lusitanian BasinLocation: Llewellyn Formation, St Clair, Pennsylvania Weight: 2 Pounds 10. 4 Ounces Dimensions: 10. 1 Inches Long, 5. 2 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 Long before modern forests existed, dense swamp ecosystems covered much of the Earth during the Pennsylvanian