The Hymenopteran Tree of Life: Evidence from Protein-Coding Genes and Objectively Aligned Ribosomal Data Klopfstein, Seraina ; Vilhelmsen, Lars ; Heraty, John M. ; Sharkey, Michael ; Ronquist, Fredrik Abstract Publication: PLoS ONE Pub Date: August 2013 DOI: 10.1371/journal.pone.0069344 Bibcode: 2013PLoSO...869344K