Say bmorefossil, I collect in the same area and have never found anything that looks like your pac-man specimen(s).  Since you found more than one, it must be something right?  But what?  A first guess is some sort of bone, perhaps vertebra.  Does it look bone-like (porous) up close?  It's fun finding new stuff, but not so fun when you hav a bunch of unidentified "stuff".  I have two specimens of "something" that look identical, but no one has ever been able to help me ID them.  So, you may have to settle for leaving them in a box of unknowns for now.  Over time you're bound to see your specimen ID'd on someone's website, eBay, etc.

Daryl.