Fossil Rhus Leaf – Green River Formation


Fossil Rhus Leaf
Origin: Utah, USA
Age: Eocene (45-50 Million Years)
Species:  Rhus myricoides (Sumac Leaf)
Size: W. 4″,  H. 2.5″

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This beautiful Fossil Rhus Leaf is from Green River Formation, which is an Eocene geologic formation that records the sedimentation in a group of intermountain lakes in three basins along the present-day Green River in Colorado, Wyoming, and Utah. Ferns are a very ancient family of plants. They predate the beginning of the Mesozoic era, 360 million years ago. By as early as the Triassic period, evidence of ferns related to several modern families appeared.

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