巨型山东龙的系统分类、生活习性与生态环境研究

简要回顾了我国山东省诸城市吕标乡库沟村龙骨涧晚白垩世早期辛格庄组中产出的巨型山东龙的研究历史,并讨论了巨型山东龙与"巨大诸城龙"的系统分类关系。对比两者的产出状况、骨骼结构和个体发育特征,作者认为两者为同物异名。依据古生物命名法规的优先律,巨型山东龙命名在先,合法有效;"巨大诸城龙"命名较晚,是一无效名称,应予取消。还讨论了巨型山东龙的生活习性和生态环境,认为巨型山东龙属陆栖性、群居性、植食性恐龙,生活在气候温暖、雨水充沛、植被繁茂的低山或丘陵地区。此外研究了巨型山东龙赋存地层的沉积特征,认为是一套辫状河流相或冲积扇相沉积,而不是湖相沉积。恐龙化石的密集产出是非正常集群死亡于突发性灾害事件的结果,而与国际上的K/T事件无关。

Classification,life behaviour and environment of Shantungosaurus giganteus(Hydrosauridae,Dinosauria)

This paper gives a brief historical review of the study of the duckbilled dinosaur Shantungosaurus giganteus Hu,1973,from the Xingezhuang Formation of the early Late Cretaceous age at Longgujian valley of Kugou village,Liabiao town,Zhucheng city,Shandong province,China,and has a discussion on the systematical relationship between Shantungosaurus giganteus Hu,1973 and Zhuchengosaurus gigantus Zhao et al,2007.On the basis of the burial characteristics,skeletal structures and ontogenic characteristics,Zhuchengosaurus gigantus Zhao et al,2007 is considered to be synonymic with Shantungosaurus giganteus Hu,1973.According to the naming priority in palaeontology,Zhuchengosaurus gigantus Zhao et al.,2007 is regarded to be invalid herein.This paper also deals with the life behaviour and environment of Shantungosaurus giganteus,which is thought to he a terraneous,gregarious,maigre(or plant-eating)duckbilled dinosaur,living in hills and intervales with Warm weather,plentiful rainwater and flourishing vegetation.In addition,the study of the fossil-bearing strata shoWS the sedimentary ellaracteristics of branching streams or fluvial fans facies,rather than lacustrine facies.The terribly dense occurrence of dinosaur fossils is regarded as the result of exeeptional mass death caused by emergent or catastrophic events,rather than the global K/T event.