Description: The Green River Formation deposits
of Wyoming, Colorado, and Utah are best known for their immaculately-preserved
fish, but other examples are known as well, as this specimen attests.
This is an example of a leaf from a member of the Leguminosae (Pea
family), one of the largest of families of flowering plants. The
family holds several plants of use to man as a food source due to
the fact that they harbor nitrogen fixing bacteria, and so need
little to no additional fertilizer. The deep brown color is a fine
contrast to the light shale matrix, with the leaf well centered
on the plate.
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