【摘要】 Ferganoconcha是广泛分布于我国北部、中亚、西伯利亚和乌拉尔地区下、中侏罗统的一类非海相双壳类。Ferganoconchasibirica的产出表明道虎沟地区道虎沟层与辽西地区的海房沟组和冀北地区的九龙山组层位相当,时代介于早侏罗世晚期至中侏罗世之间。结合昆虫和叶肢介化石反映的时代,认为道虎沟层的时代可能为中侏罗世早中期。综合近年来在Ferganoconchidae的分类方面取得的进展,对F.sibirica进行了重新厘定。更多还原

【Abstract】 Non-marine bivalve Ferganoconcha is widely distributed in the Lower and Middle Jurassic of Northern China, Central Asia, Siberia and Ural regions. The occurrence of the Ferganoconcha sibirica from the Daohugou Bed in Daohugou area indicates that the bed is correlatable with the Haifanggou Formation in western Liaoning and the Jiulongshan Formation in northern Hebei with an age ranging from late Early Jurassic to Middle Jurassic. Taking into account the age reflected by the insect and conchostracan fossils, the age of the Daohugou Bed is probably early to middle Middle Jurassic. In addition, the species F. sibirica is systematically emended based on the recent progress in the classification of the family Ferganoconchidae.更多还原