I went through the comprehensive latex symbol list and didn't manage to find a symbol that looks suitably like this.
Notice the symbol is basically a normal paren symbol cut in half:
where the bit in red is the segment of the symbol I want. The first picture posted was done in word (unicode apparently allows you to insert these sorts of paren segments).. Haven't figured out how to do this in Latex yet though..
Is there some way (package, etc) to accomplish this?