| 吉林省公主岭早白垩世泉头组网形蛋(Dictyoolithus)一新种 |
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| 引用本文： | 王强,昝淑芹,金利勇,陈军.吉林省公主岭早白垩世泉头组网形蛋(Dictyoolithus)一新种[J].吉林大学学报(地球科学版),2006,36(2). |
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| 作者姓名： | 王强 昝淑芹 金利勇 陈军 |
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| 作者单位： | 吉林大学,地球科学学院,长春,130061;吉林大学博物馆,长春,130026;中国地质博物馆,北京,100031;吉林大学博物馆,长春,130026 |
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| 基金项目： | 吉林省科技发展基金项目(吉科合字第90344号) |
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| 摘 要： | 报道了吉林省公主岭早白垩世泉头组发现的一窝恐龙蛋化石。蛋化石近圆形,蛋壳厚度1.4~1.7 mm,蛋壳外表面均匀分布椭圆形或圆形大小不一的凹坑;蛋壳层由2、3个呈分树枝状的基本结构单元叠加而成,蛋壳基本单元之间气孔道阔大而不规则,靠近蛋壳外表面的基本结构单元相互连结、融合形成一层相对致密的薄层。据以上特征将其归为网形蛋科(Dictyoolithidae),网形蛋属(Dictyoolithus),定为一新种:公主岭网形蛋(Dictyoolithus gongzhulingensisoosp.nov.)。公主岭网形蛋是网形蛋类化石在中国东北地区的首次发现,同时也是早白垩世地层中网形蛋化石新的发现。
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| 关 键 词： | 吉林省公主岭 早白垩世 泉头组 恐龙蛋 |
A New Oospecies,Dictyoolithus Gongzhulingensis, from the Early Cretaceous Quantou Formation in the Central Jilin Province |
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| WANG Qiang,ZAN Shu-qin,JIN Li-yong,CHEN Jun.A New Oospecies,Dictyoolithus Gongzhulingensis, from the Early Cretaceous Quantou Formation in the Central Jilin Province[J].Journal of Jilin Unviersity:Earth Science Edition,2006,36(2). |
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| Authors: | WANG Qiang ZAN Shu-qin JIN Li-yong CHEN Jun |
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| Abstract: | A nest with four dinosaur eggs from the Early Cretaceous Quantou Formation in Gongzhuling area of Jilin Province is described here.The eggs are spherical in shape;the eggshell thickness varies between 1.4-1.7 mm;the outer surface of the eggshell is completely covered by circular or oval pits.Eggshell layer is composed of 2 to 3 superimposed basic structure units.There are some relatively wide pore canals between the units,which are laterally interlocked with interfusion each other to form a thin hard layer near the outer surface of the eggshell.The pore canals are irregular in shape.Based on all above mentioned characters of the egg fossils from Gongzhuling,Jilin Province the authors designate them as a new oospecies of Dictyoolithus,named as Dictyoolithus gongzhulinensis.Dictyoolithus gongzhulingensis is the first time found in the Northeast of China and also a new found in the Early Cretaceous strata. |
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| Keywords: | Gongzhuling of Jilin Province Early Cretaceous Quantou Formation dinosaur egg |
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