Identify This Stuff I Found In My Oil Pan!

[itsmillertime]

So a friend of mine's SR developed what we thought was a slight rod knock the other day. After pulling the oil pan and replacing them one by one they all looked perfect. We were about put the oil pans, windage trays, hardware, etc... in the dishwasher when I noticed some small pieces in the lower oil pan. After pulling the valvecover and looking around the crankcase and head we are stumped as to what it might be/ have been. Maybe part of the oil pump? One of the pieces in the picture (silver in color) appears to be a c-clip. Anyone with in-depth experience of SR's please help us out!