| 吉林蛟河盆地下白垩统大拉子组介形虫化石组合特征 |
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| 引用本文： | 李国郡,陈宇,许国雨,郑大贺,王存柱,任龙,杨帆,叶蕴琪,毛永新.吉林蛟河盆地下白垩统大拉子组介形虫化石组合特征[J].地质与资源,2023,32(1):14-20. |
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| 作者姓名： | 李国郡 陈宇 许国雨 郑大贺 王存柱 任龙 杨帆 叶蕴琪 毛永新 |
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| 作者单位： | 1. 中国地质调查局 牡丹江自然资源综合调查中心, 黑龙江 牡丹江 157021;2. 吉林农业大学 资源与环境学院, 吉林 长春 130118;3. 宁波海洋研究院, 浙江 宁波 315832 |
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| 基金项目： | 中国地质调查局项目"东北内蒙古沿边及特殊地区地质矿产调查"(DD2016007801);"吉林大车背沟等8幅1:5万矿产地质调查"(DD2020810). |
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| 摘 要： | 蛟河盆地内广泛出露下白垩统大拉子组，并在保家村附近产出介形虫、叶肢介和植物碎片等化石.通过1∶2 000地质剖面实测中分层采集化石，在保家村北侧剖面的大拉子组中获得介形虫5属9种，其中包括1个相似种和6个未定种，分别是：Cypridea paracavernosa,C. concinaformis,C. sp.,Candoniella cf. candida,Candoniella sp.,Scabriculocypris sp.,Mongolianella sp.,Candona sp. 1和Candona sp. 2.结合前人的化石发现，建立了Cypridea paracavernosa-C. concinaformis组合，该介形虫组合可以与吉林延边大拉子组介形虫进行对比，时代可能为早白垩世晚期.
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| 关 键 词： | 介形虫 早白垩世 大拉子组 蛟河盆地 吉林省 |
| 收稿时间： | 2021-12-24 |
CHARACTERISTICS OF OSTRACODA FOSSIL ASSEMBLAGE OF THE LOWER CRETACEOUS DALAZI FORMATION IN JIAOHE BASIN,JILIN PROVINCE |
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| LI Guo-jun,CHEN Yu,XU Guo-yu,ZHENG Da-he,WANG Cun-zhu,REN Long,YANG Fan,YE Yun-qi,MAO Yong-xin.CHARACTERISTICS OF OSTRACODA FOSSIL ASSEMBLAGE OF THE LOWER CRETACEOUS DALAZI FORMATION IN JIAOHE BASIN,JILIN PROVINCE[J].Geology and Resources,2023,32(1):14-20. |
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| Authors: | LI Guo-jun CHEN Yu XU Guo-yu ZHENG Da-he WANG Cun-zhu REN Long YANG Fan YE Yun-qi MAO Yong-xin |
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| Institution: | 1. Mudanjiang Natural Resources Comprehensive Survey Center, CGS, Mudanjiang 157021, Heilongjiang Province, China;2. College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China;3. Ningbo Institute of Oceanography, Ningbo 315832, Zhejiang Province, China |
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| Abstract: | The Lower Cretaceous Dalazi Formation is widely developed in Jiaohe Basin, with ostracoda, conchostraca and plant debris fossils occurred near Baojia village. Through the stratified fossil collection in 1:2 000 surveyed geological section, 5 genera with 9 species of ostracoda are discovered from Daliazi Formation at the section on the north of Baojia village, including 1 similar species and 6 undefined species:Cypridea paracavernosa, C. concinaformis, C. sp., Candoniella cf. candida, Candoniella sp., Scabriculocypris sp., Mongolianella sp., Candona sp. 1 and Candona sp. 2, respectively. Combined with previous fossil findings, the Cypridea paracavernosa-C. concinaformis assemblage is established, which could be compared with the ostracoda of Daliazi Formation in Yanbian, Jilin Province, and the age was probably the late Early Cretaceous. |
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| Keywords: | ostracoda Early Cretaceous Dalazi Formation Jiaohe Basin Jilin Province |
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