Amiot, R. & Göhlich, U.B. & Lecuyer, C. & de Muizon, C. & Cappetta, H. & Fourel, F. & Heran, M.A. & Martineau, F. (2008)
Oxygen isotope compositions of phosphate from Middle Miocene-Early Pliocene marine vertebrates of Peru.
Palaeogeography, Palaeoclimatology, Palaeoecology, 264(1), 85–92 DOI: 10.1016/j.palaeo.2008.04.001