Late Paleozoic strata in northeastern China are distributed in a zonal pattern around the old-land on the Jiamusi-Mongolia Block.They are composed of active dep
In Jurassic sediments of Siberia,remains of Lycopodites are rare in occurrence. They are represented by two species: Lycopodites tenerrimus Heer,and L.( ?) tric
Some well-preserved conifer leafy shoots and female cones from the Lower Cretaceous Changcai Formation near Fudong of Helong, eastern Jilin, Northeast China are