Utica Shale sponge
This specimen is not all that visually appealing, but it does have great spicule preservation. The non-pyritized ones tend to be larger and have better spicule preservation.
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© Owen Yonkin 2022
By Nautiloid
This specimen is not all that visually appealing, but it does have great spicule preservation. The non-pyritized ones tend to be larger and have better spicule preservation.
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