Fossil Plotopterid Seabirds from the Eo-Oligocene of the Olympic Peninsula (Washington State, USA): Descriptions and Functional Morphology Dyke, Gareth J. ; Wang, Xia ; Habib, Michael B. Abstract Publication: PLoS ONE Pub Date: October 2011 DOI: 10.1371/journal.pone.0025672 Bibcode: 2011PLoSO...625672D