An Exceptionally Preserved Transitional Lungfish from the Lower Permian of Nebraska, USA, and the Origin of Modern Lungfishes Pardo, Jason D. ; Huttenlocker, Adam K. ; Small, Bryan J. Abstract Publication: PLoS ONE Pub Date: September 2014 DOI: 10.1371/journal.pone.0108542 Bibcode: 2014PLoSO...9j8542P