@inproceedings{Sawada2006-uj, author = "Y. Sawada and M. Saneyoshi and K. Nakayama and T. Sakai and T. Itaya and M. Hyodo and Y. Mukokya and M. Pickford and B. Senut and S. Tanaka and T. Chujo and H. Ishida", title = "The Ages and Geological Backgrounds of Miocene Hominoids Nacholapithecus, Samburupithecus, and Orrorin from Kenya", year = 2006, booktitle = "Human Origins and Environmental Backgrounds", publisher = "Springer US", pages = "71-96" } @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" }