A new oofamily of dinosaur egg from the Upper Cretaceous of Tiantai Basin,Zhejiang Province,and its mechanism of eggshell formation  

作　　者：WANG Qiang WANG XiaoLin ZHAO ZiKui JIANG YanGen 

机构地区：[1]Key Laboratory of Evolutionary Systematics of Vertebrates,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences Beijing 100044 China [2]Tiantai Bureau of Land and Resources of Zhejiang Province Tiantai 317200,China

出　　处：《Chinese Science Bulletin》2012年第28期3740-3747,共8页

基　　金：supported by the National Natural Science Foundation of China(40772017 and 41172018);the National Science Fund for Distinguished Young Scholars(40825005);the National Key Basic Research Program of China(2012CB821900);the Key Laboratory of Evolutionary Systematics of Vertebrates,IVPP,CAS (2011LESV004)

摘　　要：Here we describe new types of dinosaur eggs found from the Late Cretaceous Chichengshan Formation in the Tiantai Basin,Zhejiang Province.On the basis of such characters as small spheroid or near-spheroid,columnar layer composed of three zones,the outer zone consisted of stalagmite-like or coralliform secondary shell units,we established two new oogenera,one new and one combination oospecies:Stalicoolithus shifengensis oogen.et oosp.nov.and Coralloidoolithus shizuiwanensis oogen.et comb.nov.In addition,re-examination of the holotype of Shixingoolithus erbeni from the Upper Cretaceous Pingling Formation,Guangdong Province reveals that it was erroneously attributed to Spheroolithidae,and should be transferred to stalicoolithid.Consequently,we established a new oofamily:Stalicoolithidae oofam.nov.Stalicoolthids represents a new model of dinosaur eggshell and thus sheds new light on the formation and evolution of amniotic eggshells.Here we describe new types of dinosaur eggs found from the Late Cretaceous Chichengshan Formation in the Tiantai Basin, Zhejiang Province. On the basis of such characters as small spheroid or near-spheroid, columnar layer composed of three zones, the outer zone consisted of stalagmite-like or coralliform secondary shell units, we established two new oogenera, one new and one combination oospecies： Stalicoolithus shifengensis oogen, et oosp. nov. and Coralloidoolithus shizuiwanensis oogen, et comb. nov. In addition, re-examination of the holotype of Shixingoolithus erbeni from the Upper Cretaceous Pingling Formation, Guangdong Province reveals that it was erroneously attributed to Spheroolithidae, and should be transferred to stalicoolithid. Consequently, we established a new oofamily： Stalicoolithidae oofam, nov. Stalicoolthids represents a new model of dinosaur eggshell and thus sheds new light on the formation and evolution of amniotic eggshells.

关 键 词：恐龙蛋壳 天台盆地 蛋壳形成 浙江省 上白垩统 机制 晚白垩世 柱状层 

分 类 号：Q915.864[天文地球—古生物学与地层学] Q915.2[生物学—古生物学]