文中描述了发现于吉林汪清下白垩统大拉子组似卷柏化石：纤细草本，侧叶和中叶呈四行排列。侧叶互生，卵形，全缘，顶端尖锐，叶片前端略向内侧弯曲，叶背呈龙骨状，基部无柄，略呈鞘状；中叶生于两侧叶之间，形态与侧叶相似，在茎上密集贴生。该化石与报道自我国辽西下白垩统义县组下部尖山沟层的多产似卷柏 Selagin-ellites fausta (Wu)Sun and Zheng特征相似，但由于未保存生殖器官结构，无法进一步详细对比，因此将其定为Selaginellites cf．fausta (Wu)Sun and Zheng。这是我国目前为止发现的距今最近的似卷柏化石，丰富了中国似卷柏的化石记录。

A fossil plant attributed to Selaginellites from the Lower Cretaceous Dalazi Formation in Wangqing County,Jilin Province is described in this paper. The fossil is tenuous herbaceous,small, stem thin, leaves heterophyllous,decussate,arranged in four rows(two lateral rows and two median rows).Lateral leaves larger,ovate,entire,dosally keel-like ribbed,apices top and the front of the blade is slightly curved inward,attached to the stem with an amplexicaul base without petiole. Median leaves small,adpressed to the stem densely and parallel with stem,much similar with lateral leaves in shape.This specimen resembles closely Selaginellities fausta(Wu)Sun and Zheng from the Jianshangou bed of the lower part of the Lower Cretaceous Yixian Formation. It is hard for further comparison due to no reproductive organ have been found, the present fossil is attributed to Selaginellitescf.fausta(Wu)Sun and Zheng.It represents the latest fossil record of Selaginellites in China so far,and enriches the Selaginellites fossil record in China.

国家自然科学基金(41472011，41688103)；中国科学院战略性先导科技专项(B类)(XDB18000000)联合资助