Category:Middle Ordovician life
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Subcategories
This category has the following 4 subcategories, out of 4 total.
- Middle Ordovician animals (2 C, 3 P)
E
- Middle Ordovician extinctions (1 C, 21 P)
F
- Middle Ordovician first appearances (3 C, 77 P)
M
- Middle Ordovician genera (1 C)
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