摘要
浙东天台盆地早白垩世晚期的阿普特(Aptian)期至晚白垩世早期的赛诺曼(Cenomanian)期天台群赖家组和赤城山组已发现数以千计的恐龙骨骼及蛋化石。通过对恐龙骨骼及蛋化石地层剖面实测,首次精确厘定了天台盆地恐龙动物群的出露层位。化石研究显示,恐龙生物群包括蜥脚类(sauropods)、鸭嘴龙类(hadrosaurs)、慢龙类(segnosaurs)、甲龙类(ankylosaurs)、盗蛋龙类(oviraptorids)、伤齿龙类(troodontids)及暴龙类(tyrannosaurs)等恐龙,暗示了天台盆地的自然环境非常适宜恐龙生存。季节性山洪爆发及河流泛滥,特别是河流泛滥时夹带泥浆的细颗粒沉积物快速封埋恐龙蛋,有利于保存为化石,使天台盆地白垩系成为世界上恐龙蛋化石最丰富的地层之一。
Thousands of fossil bones and eggs of dinosaurs have been found from the Laijia and Chichengshan formations（Aptian and Cenomanian） of the Tiantai Basin of Zhejiang Province,eastern China.We revised the dinosaur fossil strata of the Tiantai basin based on stratigraphic measurements of several sections.Dinosaurs recovered from the Tiantai Basin include sauropods,hadrosaurs,segnosaurs,ankylosaurs,oviraptorids,troodontids and tyrannosaurs,indicating that the paleoenvironments in the Tiantai Basin were suitable for dinosaurs.Seasonal flash floods and overflowed rivers,when carrying fine-grained sediments,often rapidly buried the eggs to preserved them in the fossil record.The Cretaceous strata in the Tiantai Basin are among those with the most abundant fossil eggs in the world.
出处
《地层学杂志》
CSCD
北大核心
2011年第3期258-267,共10页
Journal of Stratigraphy
基金
国家自然科学基金(No.40872006,No.40672041)
国家自然科学青年基金(No.41002024)
中国地质调查局基础地质综合研究项目(No.1212010610611)
中国地质调查局科外部综合研究项目(No.1212011121099)资助
关键词
生物地层
恐龙化石
蛋化石
赖家组
赤城山组
白垩系
天台盆地
浙江
biostratigraphy
fossil dinosaur bones
fossil eggs
Laijia Formation
Chichengshan Formation
Cretaceous
Tiantai Basin
Zhejiang
