Radiocarbon dating, Potassium Argon dating, Obsidian Hydration dating, Paleomagnetic and Archaeomagnetic dating, Luminescence, and a whole range of other Isotopic dating methods.
I am somewhat familiar with those tests.
I was curious as to how fishtank obtained a specimen and what scientific tests HE ran to back up his claim.
The things that FReepers do amaze me.