DAVYDOV, Vladimir I.1, CHERNYKH, Valery V.
2, CHUVASHOV, Boris I.
3, SCHMITZ, Mark D.
1, SNYDER, Walter S.
1 and WARDLAW, Bruce R.
4, (1)Department of Geosciences, Boise State Univ, 1910 University Drive, Boise, ID 83725, (2)Laboratory of Stratigraphy and Paleontology, Institute of Geology and Geoshemistry, Uralian Scientific Ctr of Russian Academy, Pochtovy Per. 7, Ekaterinburg, Russia, 620219, Ekaterinburg, 620219, Russia, (3)Laboratory of Stratigraphy and Paleontology, Institute of Geology and Geoshemistry, Uralian Scientific Ctr of Russian Academy, Pochtovy Per. 7, Ekaterinburg, 620219, Russia, (4)US Geol Survey, 926A National Ctr, Reston, VA 20192-0001, Vdavydov@boisestate.edu, Vdavydov@boisestate.edu