Ok I was pumped up to see a real monster root, thinking 3-4-5 oz.
But now I have to tell you that I am just as impressed by the tiny roots that have lived that long.
Those big monster roots actually have it made, growing in ideal conditions, getting big and fat or long. Don't take much for them to survive to live long.
The tiny root that you found, obviously was not in ideal growing conditions, but it had what it took to survive all of those years anyway.
When it comes to selecting special roots to keep - that one would sure be a keeper in my book.
Below is a pic of several smallish roots with 15-25 year age that I selected to keep this year.
If I were you I would keep that root and eat it - might just find yourself hanging in there and doing a little better when things are less than ideal