A new tropical Oligocene dolphin from Montañita/Olón, Santa Elena, Ecuador Tanaka, Yoshihiro ; Abella, Juan ; Aguirre-Fernández, Gabriel ; Gregori, Maria ; Fordyce, R. Ewan Abstract Publication: PLoS ONE Pub Date: December 2017 DOI: 10.1371/journal.pone.0188380 Bibcode: 2017PLoSO..1288380T