中国东北早白垩世一种新的昼蜓化石 (蜻蜓目: 昼蜓科)
任东 1, 刘金远 2, 程晓冬 2
A new hemeroscopid dragonfly from the Lower Cretaceous of Northeast China (Odonata: Hemeroscopidae)
REN Dong 1,LIU Jin-Yuan 2,CHENG Xiao-Dong 2
. 2003, (5): 622 -628 .