摘要
河北省青龙县木头凳镇兴隆台村霸王沟的侏罗纪地层产翼龙、蝾螈、鱼类、昆虫、叶肢介、双壳类及植物化石,是一个侏罗纪晚期的特异埋藏化石地点。研究者曾认为其相当于中侏罗统道虎沟化石层。经过我们对其中叶肢介的研究,发现霸王沟与这些脊椎动物临近层位的叶肢介与辽宁建昌玲珑塔化石层最常见的柴达木叶肢介(Qaidamestheria)属于一类,壳瓣上都具有较稀疏的微小刻点装饰,而与道虎沟化石层的"真叶肢介"却具有一定差异。霸王沟的叶肢介和脊椎动物组合面貌与玲珑塔化石层相似,属玲珑塔化石层,时代为晚侏罗世最早期,明显晚于道虎沟化石层。道虎沟化石层和玲珑塔化石层的生物组合代表了燕辽生物群早晚两个有明显差异又相互关联的群落。
The Jurassic strata at Bawanggou,Xinglongtai Village,Mutoudeng Township,Qinglong County,Hebei Province yield fossil mammals,pterosaurs,salamanders,fishes,insects,conchostracans,bivalves and plants,which represent an example of exceptional preservation of the Jurassic Period.Previous authors regarded the fossiliferous strata as equivalents of the Middle Jurassic Daohugou beds.However,fossil conchostracans from the Bawanggou locality can be assigned to the genus Qaidamestheria which is most common in the Linglongta beds at Jianchang County,Liaoning Province.These conchostracans are ornamented with the sparse minute puncta and are clearly different from ＂Euestheria＂from the Daohugou beds.The similarities in fossil conchostracans and vertebrates between the Linglongta and Bawanggou localities indicate that the fossiliferous Bawanggou beds should be of early Late Jurassic age（ca.160 Ma）and they may be regard as equivalent to the Linglongta beds.The biotas in the Daohugou and Linglongta beds are distinct and they are examples of early and late assemblages of the Yanliao Biota,respectively.
出处
《地层学杂志》
CSCD
北大核心
2014年第4期433-438,共6页
Journal of Stratigraphy
基金
国家重点基础研究发展计划项目(2012CB821903)
国家自然科学基金(91114201
41222013
J1210006)
江苏省杰出青年基金(BK2012049)联合资助
