The 15 specimens in this collection are from six geologic periods.
From oldest to youngest they are: Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian.
The 15 specimens in this collection are from six geologic periods.
From oldest to youngest they are: Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian.