新疆乌鲁木齐郝家沟晚三叠世似管状叶属(Solenites)植物新发现

笔者在新疆乌鲁木齐晚三叠世郝家沟组首次发现了茨康类似管状叶属一新种—郝家沟似管状叶(Solenites haojiagouensis sp.nov.)。该种以普通表皮细胞细长,不发育毛基乳突,气孔器纵向松散排列或呈单列等特征区别于似管状叶属已知种。由于似管状叶属以往仅在侏罗纪—白垩纪地层发现,当前新种的发现是中国晚三叠世似管状叶属的首次记录。新种的研究将为了解似管状叶属的分类以及恢复新疆地区晚三叠世古地理、古气候、古环境提供新的数据。

New discovery of Solenites(Czekanowskialean) from Upper Triassic Haojiagou Formation in Urumqi,Xinjiang

Based on the study in gross leaf morphology and cuticles, a new species of genus Solenites (Czekanowskialean), S. haojiagouensis sp. nov. from the Upper Triassic Haojiaogou Formation in Urumqi area, Xinjiang, China, is first reported in this paper. The new species is characterized by thinner and elongated ordinary epidermal cells, absence of papillae and trichomes, and stomata with loose orientation longitudinally or in a single orientation. Most of the known species of Since Solenites were found in the Jurassic and Cretaceous, therefore, the discovery of the new species is the first fossil record of Solenites in the Upper Triassic in China. The study of the new taxon will provide new data for the classification of Solenites and the understanding of Late Triassic paleogeography, paleoclimate and paleoenvironment in Xinjiang.