The Siberia province is characterized by great development of Syringothwts, but lack of Gigantoproductus and less development of corals and plants, belonging to Angara flora.

• 西伯利业省以管孔贝大量发育为特征，缺少大长身贝类，珊瑚不甚发育，植物少见，为安加拉植物群；