| If the space in the rock is filled up with mineral salts dissolved in the water, a cast fossil is produced. |
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| Sometimes minerals fill in the mould resulting in cast fossil which gives the idea of external features of animals. |
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| The formation of a mold fossil is the first process in the creation of a cast fossil. |
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| They can replicate the formation of a cast fossil by mixing plaster of paris outdoors and filling in animal tracks with it. |
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| The fossil fuel industry, including the American Petroleum Institute lobby group and Peabody Coal, has cast fossil fuels as a route out of poverty in the developing world. |
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