| | | | LOWER | | | 30 | Sandstones and OLIGOCENE |TONGRIAN | | | sandstone-grits with | | | | silicified trees and | | | | | | | | Basalt sheets, | | | | interbedded and | | | | contemporaneous. -----------+---------+--------+-----------+- - - - - - - - - - - - - - | | | | Variegated sands, | | | | sandstones, clays and | | | | marls, with | | | | limestone-grits and thin | | | | bands of limestone. The | | | | upper beds contain _Unio_ | | | | sp., _Lanistes | | | | bartonianus_, Blanck., | | | | _Turritella pharaonica_, | | | | Cossm., _Potamides | | | | scalaroides_, Desh., _P. | | | | tristriatus_, Lam., | | | | _Pleurotoma ingens_, | | | | May.-Eym. In the lower | | | | beds are large numbers of | | | | silicified trees | | | | associated with | | | | vertebrate remains | | | | including _Arsinoitherium | | | | Zitteli_, Beadn., _A. | | | | Andrewsii_, Lankester, UPPER | | | | _Palæomastodon EOCENE |BARTONIAN| | 250 | Beadnelli_, Andr., _P. | | | | minor_, Andr., | | | | _Mœritherium Lyonsi_, | | | | Andr., _M. trigodon_, | | | | Andr., _Megalohyrax | | | | eocænus_, Andr., _M. | | | | minor_ Andr., | | | | _Saghatherium antiquum_, | | | | Andr. and Beadn., _S. | | | | minus_, Andr. and Beadn., | | | | _S. magnum_, Andr., | | | | _Ancodus Gorringei_, | | | | Andr. and Beadn.,