【摘要】 山西省洪洞县茹去地方,在沁水盆地西缘,有一套厚一千二百公尺、面积30平方公里的带状陆碎屑岩地层。长久以来由于没有发现任何生物化石,曾被推断为中三叠统或上三叠统,也有将其划归白垩系的、莫衷一是。此次在茹去张家庄泥岩中发现了一些鱼类化石,经鉴定是狼鳍鱼(Lycoptera)的一种,应属侏罗纪晚期的鱼类,从而为该套地层的地质时代归属问题提供出了生物化石依据。更多还原

【Abstract】 The fossil fishes described in the present paper were found from Ruqu Village, Hongdong county, Shanxi. It represents the first record of fossils that has ever been found in the Ruqu Beds-a series of terrestrial clastic strata, "with the thickness of 1200 meters and anxposed area of 15 km.long and 2 km. wide, located in the western margin of Xinshui Basin near the Hongdong County.After studing, it was found that the fossil fishes belong to Ly-coptera sp. arid the age of them can be regarded as late Jurassic. This discovery is very important, for it solves not only the problem of the geological age of the Ruqu Beds, which has been argued a-mong geologists for many years, also it surposes a lot of valuable materials to study the development progress of structures, sediments and organisms at the Rugu area during late Jurassic period.更多还原