Pyenson, N.D. & Irmis, R.B. & Lipps, J.H. & Barnes, L.G. & Mitchell, E.D. & Mcleod, S.A. (2009)
Origin of a widespread marine bonebed deposited during the middle Miocene Climatic Optimum. Geology, 2009(37), 519–522
DOI: 10.1130/G25509A.1