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Name:
Persea coriacea
Age: Eocene
Formation: Green River Formation
Location: Bonanza, Utah
Size: Leaf is 4.5 inches long including petiole!
This is a fine specimen of Persea coriacea, a member of the Laurel family, from the Eocene of Utah. This large leaf has an asymmetrical base and an acuminate apex. The slightly dentate margins of the leaf are easily seen, and the primary venation is quite evident. The petiole is tightly attached to the base of the leaf. This fossil leaf has excellent dark brown color and contrasts wonderfully with the khaki-colored matrix. The leaf is well positioned on the rectangular plate of shale. This is a very nice example of this very unusual leaf from the Green River Formation.
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