These dinosaur tracks are only a few of the hundreds of tracks uncovered in Rocky Hill by a construction crew in 1966. Quick-acting state officials stopped the bulldozers and preserved the site as Dinosaur State Park. A geodesic dome built over a portion of the trackway protects this dramatic demonstration of the earth's great age and the ever-changing chain of life.

suggested that life - and time - had been going on longer than was previously thought. The seeds of doubt were taking root.

Another important piece of evidence concerning the Earth's age was observed in brownstone and many other sedimentary rocks. Geologists noticed that brownstone actually seemed to be composed partly of small fragments of other rock types. When one looked closely, brownstone was found to contain tiny pieces of schist and gneiss from the Uplands. The implications of this and similar observations made elsewhere were enormous. It meant the schists and gneisses of the Uplands must be older than the brownstone of the Central Valley, in the same way that chocolate chips must be made before chocolate chip cookies. It implied the Uplands had been eroded and the resulting sediment carried into the Central Valley, whereupon it was cemented into brownstone. But most importantly, it indicated that the crust of the Earth was not fixed and unchanging, cast into rigid land forms by the act of Creation. In great contrast to his statements of 1806, Silliman wrote in 1833:

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