Originally posted by Nightshade
Thank you this is exactly the kind of thing I was getting at...skeptics can be right sometimes 
So I am assuming that potassium-40 as of now is the accepted standard until proven otherwise.
I still think 425 million years old is a bit unbelievable.
he he, thats my fault, i said it was carbon dating.
its really not that unbelieveable though. well, to me at least. but like i said before, its always good to be skeptical, but make sure you're smart about it.