Just made a new Instructional Article to help decipher where do all the different cuts of ribs come from:
http://www.smokingmeatforums.com/a/differences-between-spareribs-st-louis-ribs-babyback-ribs
Hope it helps!
http://www.smokingmeatforums.com/a/differences-between-spareribs-st-louis-ribs-babyback-ribs
Hope it helps!