@article{Sawada2002-eh, author = "Y. Sawada and M. Pickford and B. Senut and T. Itaya and M. Hyodo and T. Miura and C. Kashine and T. Chujo and H. Fujii", title = "The age of Orrorin tugenensis, an early hominid from the Tugen Hills, Kenya", year = 2002, journal = "C. R. Palevol", publisher = "Elsevier BV", volume = 1, number = 5, pages = "293-303", month = "Dec" } @article{Sawada2001-ml, author = "Y. Sawada and T. Miura and M. Pickford and B. Senut and T. Itaya and C. Kashine and M. Hyodo and T. Chujo and H. Fujii", title = "{O-27} The age of Orrorin tugenensis, a late Miocene hominid, from the Tugen Hills, Kenya", year = 2001, journal = "日本地質学会学術大会講演要旨", publisher = "jstage.jst.go.jp", volume = 2001, pages = "15" }