Abstract

A new collection of plant fossils from the Derevyannye Gory Formation of the New Siberia Island collected in 2016 was studied. Thirty species of fossil plants attributed to liverworts, ferns, ginkgoaleans, conifers, and angiosperms were identified and illustrated; 16 of these species were not previously encountered among the New Siberian flora. A new angiosperm species Dalembia (?) gracilis Herman was described. New Siberian flora is characterized by a moderately rich systematic composition, by the predominance of conifers and angiosperms, by the dominance of the large-leaved platanoids and the species of the genus Trochodendroides among angiosperms, by the predominance of dentate-margined angiosperms, by the rarity of entire-margined forms, and by the total absence of cycadaleans and bennettitaleans. The age of the New Siberian flora corresponds to the Turonian–Coniacian interval; most likely, the flora should be dated to the Turonian. Plants of the New Siberian flora experienced a warm-temperate humid climate with warm summer, mild frost-free winter, and insignificant seasonality in precipitation.

中文翻译：

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新西伯利亚群岛新西伯利亚岛晚白垩世植物区系的新数据

摘要

研究人员于2016年从新西伯利亚岛的Derevyannye Gory组中收集了一批新的植物化石。鉴定并举例说明了归因于地艾，蕨类，银杏，针叶树和被子植物的30种化石植物。在新西伯利亚植物群中以前没有遇到过这些物种中的16种。新的被子植物Dalembia（？）藻赫尔曼被描述。西伯利亚新植物区系的特征是中等程度的系统组成，针叶树和被子植物的优势，大叶扁平动物的优势以及Trochodendroides的种类在被子植物中，由于具缘缘被子植物占优势，由于完全缘缘形式的稀有性，以及完全没有cycadaleans和bennettitaleans。新西伯利亚植物区系的年龄对应于土伦-哥尼亚时期。最有可能的是，植物群应追溯到土伦。新西伯利亚植物区系的植物经历了温带湿润的气候，夏季温暖，冬季无霜，降水季节性不明显。