?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Porro&rft.au=Porro%2C+LB&rft.aufirst=LB&rft.issue=3&rft.title=PLOS+ONE&rft.date=11+March+2015&rft.atitle=Descriptive+Anatomy+and+Three-Dimensional+Reconstruction+of+the+Skull+of+the+Early+Tetrapod+Acanthostega+gunnari+Jarvik%2C+1952&rft.volume=10&rft.genre=article