Lot 633
Pair of Positive and Negative Dinosaur Footprints, This highly unusual pair of rare fossil dinosaur footprints on a 9 x 8 inch gray shale slab contains a positive and a negative fossil footprint from the same dinosaur, a 6 x 2.5 inch raised negative footprint on one side and a 6 x 3 inch positive footprint on the other side. Because the slab is very thin these footprints belong to the same dinosaur and were made at the same time. These 187-208 million year old footprints from the East Berlin formation of West Springfield Massachusetts are known as Grallator cuneatus and were made by a meat eating dinosaur similar to Podokesaurus, a medium sized theropod, whose partial skeleton was found in the same area. These footprints are complete even showing the claw imprints. This rare pairing of the same dinosaur also illustrates how the shape of the footprint differs in the positive and negative impressions with the toe impressions being thicker and larger in the positive.
Add $15 for domestic shipping.
Estimated Value $450 - 600
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| Realized $468 |
