Platanus wyomingensis - Sycamore Leaf

November 2019

Image of rock slab with two Platanus wyomingensis leaves preserved

Platanus wyomingensis DSM#10700
Green River Formation
Early- to Mid-Eocene (approximately 50 Million years)
Wyoming

This beautiful specimen was recently donated to the Dunn-Seiler Museum by alumnus Barry McMullan. 

The slab contains at least two species of plant leaves, the most prominent being the ancient Sycamore, Platanus wyomingensis. The Green River Formation is a thick layer of lake deposited shales found in Wyoming, Colorado, Utah. The shales are well-known for the preservation of fish, insects, and plants.


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