Phosphatic microfossil - 'nested tubes' 

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Highlight for Album: original specimen (Decorah Shale)
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Highlight for Album: 2nd specimen (Glenwood Shale)
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Album: original specimen (Decorah Shale)

Changed: 06/01/05.
Contains: 13 items.
Viewed: 298 times.
Album: 2nd specimen (Glenwood Shale)

Changed: 06/28/08.
Contains: 13 items.
Viewed: 229 times.
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