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Name:
Cardiospermum coloradensis Leaf
Age: Eocene
Formation: Green River Formation
Location: Bonanza, Utah
Size: Leaf is 2.6 inches long including petiole
This is a rare split pair specimen of Cardiospermum coloradensis, a Balloon Vine, from the Eocene of Utah. Living members of Cardiospermum are herbaceous (woody) vines. The fossil species appear to represent shrubs. The distinctly lobed leaf has very good color and contrast. The leaf is well centered on the semi-squared matrix plate that also contains a Poplar Leaf and a huge Snout Beetle. This is a very fine split pair example of a large Balloon Vine leaf - two fossils in one.
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