Formation: Green River Formation
Location: Bonanza, Utah
Size: Leaf is 3.2'' long including petiole
Here is a very unusual leaf. This is a large specimen of Erythrina roanensis from the Eocene of Utah. Very few specimens of this particular leaf have ever been found in the Green River Formation. This distinct leaf has irregular, undulating margins and extremely strong venation. The primary vein is very thick and the secondary veins are alternately arranged. The short, very stout petiole is still attached to the leaf. This plant appears to have been chewed on by a bug, prior to fossilization, near the top of the leaf. The fossil has extraordinary color and contrast and is well centered on the large, squared plate of shale. This is a great example of this rare leaf from the Green River Shale.