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    • Ancestry of motor innervation to pectoral fin and forelimb 

      Ma, Leung-Hang; Gilland, Edwin; Bass, Andrew H.; Baker, Robert (Nature Publishing Group, 2010-07-27)
      Motor innervation to the tetrapod forelimb and fish pectoral fin is assumed to share a conserved spinal cord origin, despite major structural and functional innovations of the appendage during the vertebrate water-to-land ...