新疆准噶尔盆地中侏罗世Sphenobaiera（楔拜拉）一新种

报道了新疆准噶尔盆地西部玛纳斯及白杨河中侏罗世西山窑组（J₂x）银杏类楔拜拉属的一个新种--准噶尔楔拜拉（Sphenobaiera junggarensis sp. nov.）的首次发现。该新种以表皮构造为双面气孔式、上表皮气孔少、下表皮气孔密度大、孔缝基本定向、普通表皮细胞具不规则角质化隆丘及气孔器保卫细胞角质化放射纹之间发育有梳状“细耙”等特征，区别于楔拜拉属已知种。 还讨论了该新种的发现在研究楔拜拉属的分类及其古气候等方面的意义。

A New Species of Sphenobaiera from Middle Jurassic of Junggar Basin, Xinjiang, China

A new species Sphenobaiera junggarensis sp. nov. from the Middle Jurassic Xishanyao Formation in western Junggar Basin of Xinjiang, China, is reported for the first time. The new species is characterized by its cuticles in which it is amphistomatic in type, stomata are few in upper cuticles and much more in lower cuticles with basically longitudinal in orientation, ordinary epidermal cells have irregularl cutinized domes on surface and guard cells possess finely comb-shaped cutinizations between the contiguous cutinized radial striations on the outer fringes. The authors also discusse the significance of the new species of Sphenobaiera in its taxonomic and paleoclimatic studies.