凤眼莲根分泌物对Enterobacter sp.nov.苯酚代谢的影响 Palaeoskapha sichuanensis gen. et sp. nov. (Menispermaceae) from the Eocene Relu Formation in western Sichuan, West China 新疆准噶尔盆地西缘晚泥盆世一种新的石松类植物