Fossil Leaf Positive-Negative
Grundy County, Illinois
3.96 x 2.09 x 0.67 inches (10.05 x 5.31 x 1.70 cm)
Rock hounds with a penchant for fossils will be familiar with the
Mazon Creek locality for material from the Pennsylvanian. This
specimen is the typical positive-negative fossil leaf in a rock
nodule but which is far from common. The oblong, now split, rock
features fossil leaves on each side which are dark brown as is the
matrix but which nonetheless exhibit finer definition. Powdery
white highlights add some color and contrast.
[Scale: 1 inch, with mark at 1 cm]
Condition report available upon request.
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