A New Gleicheniaceous Fern Chansitheca (Sphenopteris) wudaensis from the Lower Permian of Wuda, Nei Mongol, China
DENG Sheng-Hui, SUN Ke-Qin, LI Cheng-Sen
A New Gleicheniaceous Fern Chansitheca (Sphenopteris) wudaensis from the Lower Permian of Wuda, Nei Mongol, China
DENG Sheng-Hui, SUN Ke-Qin, LI Cheng-Sen
J Integr Plant Biol . 2000, (5): 533 -538 .