Server :: Keeping Only The Most Recent 10 Files?

I need a quick script that will help me keep only the most recent 10 files in a directory.

The files look something like this:
-rw-r----- 1 root root 34816 Dec 13 13:06 3_270_737318733.dbf
-rw-r----- 1 root root 709120 Dec 13 13:06 3_271_737318733.dbf
-rw-r----- 1 root root 63488 Dec 13 13:06 3_272_737318733.dbf
-rw-r----- 1 root root 316416 Dec 13 13:06 3_273_737318733.dbf
-rw-r----- 1 root root 113664 Dec 13 13:06 3_274_737318733.dbf
code....

I need to eliminate the older files, and keep only the most current.

I've done a ls -l | sort -r and written that to a file i can read into a loop. That's where i'm running into difficulty. The difficulty being, that I don't know how to keep only the most current 10 files.