2.2" Fossil Sycamore (Macginitiea) Leaf - Green River Formation, Utah
This is a 2.2" wide, partial fossil sycamore (Macginitiea wyomingensis) leaf from the Green River Formation of Utah. It shows primary venation and the dark color of the leaf contrasts nicely against the cream-colored shale. While the Green River Formation is best know for its fish fossils, other areas produce incredible plant fossils.
A note on Green River leaf identifications. There are over 60 described leaf bearing plants from this formation, many of which have very similar leaves. We've done our best to provide identifications based on the resources available to us, but are not paleobotany experts, so we can not guarantee that all will be 100% correct.