The Derfel Limestone is a
geologic formation in
Wales. It preserves
fossils
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...
dating back to the
Ordovician period.
See also
*
List of fossiliferous stratigraphic units in Wales
References
*
Geologic formations of Wales
Ordovician System of Europe
Ordovician Wales
Limestone formations
{{Wales-stub
Fossiliferous stratigraphic units in Wales