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Tanaka, Yoshihiro; Abella, Juan; Aguirre-Fernández, Gabriel; Gregori, Maria; Fordyce, R Ewan
PloS one, 12/2017, Letnik: 12, Številka: 12Journal Article
A new small probable Oligocene dolphin from Ecuador represents a new genus and species, Urkudelphis chawpipacha. The new taxon is known from a single juvenile skull and earbones; it differs from other archaic dolphins in features including widely exposed frontals at the vertex, a dorsally wide open vomer at the mesorostral groove, and a strongly projected and pointed lateral tuberosity of the periotic. Phylogenetic analysis places it toward the base of the largely-extinct clade Platanistoidea. The fossil is one of a few records of tropical fossil dolphins.
