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Showing results for tags 'node'.
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Has part of the articulating surface and is from the Hell Creek Formation in Powder River County Montana. It's about two inches.
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I am new to the fossil collecting hobby and am attempting to open my iron concretions collected in Braidwood, IL using the freeze thaw method. I am doing it in my freezer in a single layer in a plastic shoe box. When they are thawing at room temperature the outer layers are crumbling. The nodes have not split yet. Is that normal or am I doing something wrong? Thanks.