Category:Upper Ordovician geology
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Media in category "Upper Ordovician geology"
The following 5 files are in this category, out of 5 total.
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Cleaned Porkuni regional stage (Upper ordovician) stratotype, July 23, 2017.jpg 6,000 × 4,000; 20.31 MB
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Seismite Ordovician Kentucky Close.jpg 4,000 × 3,000; 6.53 MB
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Seismite Ordovician Kentucky.jpg 4,000 × 3,000; 8.02 MB
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Waynesville Formation St. Leon IN.jpg 3,440 × 2,080; 4.68 MB