Category:Rusophycus (trilobite burrow) (Drakes Formation (Ordovician) or Brassfield Formation (Silurian); Adams County, Ohio)
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Media in category "Rusophycus (trilobite burrow) (Drakes Formation (Ordovician) or Brassfield Formation (Silurian); Adams County, Ohio)"
The following 4 files are in this category, out of 4 total.