Upper Jurassic, Tithonian stage
Solnhofen Formation, Eichsätt, Bavaria, Germany
The ghostly trace of this long-dead ancestor to today's dragonflies is preserved in the fine-grained Solnhofen limestone by a lithographic process, the outline of the insect chemically transferred to the stone over millions of years due to the anoxic conditions of the thick oxygen-free mud silt that remained when the lagoons of the area dried out towards the end of the Jurassic period. This is an exceptional example, with perfect symmetry and remarkable three-dimensionality, including a most unusual amount of detail to the wing membranes. It has a wingspan of 7¼ inches and is presented on a 17½ x 13¾-inch matrix plaque.
Estimate: $3,500 - $4,000.
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