Reversing my Camera Raw Edits

Sorry about this basic question!

I've taken some pictures with my Nikon D300 downloaded them and then opened them via Bridge into Camera Raw and played around with editing them.  I saved my work to a new folder.  Going back into Bridge, I can see my edited work but not the original.  I see a little circular icon next to my new edited file Can I get the original back?

I use the CC version of Photoshop and Windows 10.