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Hello. My siblings and I have found several disk shaped objects in a park in Hamilton, Nj. We have grouped them into two main categories. One has more than 5 sections around the center of the object and the other has 5 or less sections. I will post the first category in this thread and the other one some time later. The rock in this area is mainly from the Jurassic and Cretaceous, but there is a small segment of rock from the Cambrian. Some of the objects in the first category seem to have the disk slightly burrowed into the surrounding rock. The objects in this category also have a smaller disc in the center of the larger one. I hope that you can identify two subjects. Thank you in advance. Sorry for poor photo quality.