A shift in anterior–posterior positional information underlies the fin-to-limb evolution

Published on 18. August 2015 A shift in anterior–posterior positional information underlies the fin-to-limb evolution Koh Onimaru, Shigehiro Kuraku, Wataru Takagi, Susumu Hyodo, James Sharpe, Mikiko Tanaka ABSTRACT: The pectoral fins of ancestral fishes had multiple proximal elements connected to their pectoral girdles. During the fin-to-limb transition, anterior proximal elements were lost and only the