50 lbs of host rock that contains fossil fish. Great for science fairs and family science nights.
All of those cool fish we have come from a layer of sedimentary rock that is snuggled into SW Wyoming. Tip the rock on end and, using a chisel and hammer, split the rock into sections, not unlike splitting a loaf of bread. You will find fish, insects, leaves, and other critters preserved in the rock layers. This is the same process that paleontologists in the field use to find fossils. In essence, we bring the fossil dig to you. Saves on time and gas money, but is just as dusty as a real dig site. The rock is called siltstone and it has two very noticeable characteristics. First, it is very soft. Second, it is laminated, or splits into layers very easily. This is because the siltstone was formed, layer upon layer, as lake sediments settled to the bottom of the lake bed. Once compressed and hardened, these layers provide natural fracture zones when splitting the rock. Fossil Profile: Fish/Knightia.
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LL Demos and Labs: Squished Fish & Clues to Climate Change
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