Lacustrine and fluviatile deposits occur intermingled with the above.
above the sea, dotted with lakes, and recalling the lacustrine regions of northwestern Russia.
The Lacustrine period has not yet reached its close in Russia.
of the Russian lacustrine region, and the W.
The Cretaceous sea gradually receded and the plains of the Rolling Downs formation formed on its floor were covered by the sub-aerial and lacustrine deposits of the Desert Sandstone.