山东莱阳白恶纪后期龟类化石

CRETACEOUS TURTLES FROM LAIYANC,SHANTUNG

一.绪言本文记述的两种白垩纪龟类化石,是1951年前新生代及脊椎古生物研究室在山东莱阳采集的大批脊椎动物化石中的一部分,系刘东生与王存义两同志在莱阳的陡山及金刚口两处所发现。金刚口发现的仅一片肋甲;陡山的包括一异常完整的龟类甲壳与另一个体的一部分甲壳,前者为我国至目前为止所发现的中生代龟类化石中最完整的标本,在地层与地理分布上都有相当意义。

The material covered in this paper is a part of the rich collection of theCretaceous reptiles collected in 1951 by the Laboratory of Vertebrate Paleon-tology from Laiyang,Shantung.Remains of the turtles are comparatively rarein contrast to the abundance of the fossil eggs and dinosaurian bones found inthe fossiliferous Cretaceous beds of Laiyang.The fossil turtles discoveredhitherto include parts of four individuals belonging to two species,e.g.,(?)sp.and P(?)ishanemys latipons Bohlin.They are all Late Cretaceous in age asindicated by the associating dinosaurian faunas.