东北大学学报（自然科学版）

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辽宁省北二十家子镇第四纪哺乳动物化石的发现及研究意义

张志斌   

  1. 沈阳地质矿产研究所
  • 收稿日期:2013-05-20 修回日期:2013-09-14 出版日期:2014-05-15 发布日期:2013-11-22
  • 通讯作者: 张志斌
  • 基金资助:

    中国地质调查局“内蒙古1:5万元宝山煤矿等四幅区调”

The Discovery and Researching Significance of Quaternary Mammalian Fossils in North Twenty Town ,Liaoning Province

  1. Shenyang Institute of Geology and Mineral Resources
  • Received:2013-05-20 Revised:2013-09-14 Online:2014-05-15 Published:2013-11-22

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摘要：

辽宁省朝阳市建平县北二十家子镇附近出土的第四纪哺乳动物化石，初步分析为形成于新生代中更新世的温暖潮湿的草原生态系统的肿骨鹿鹿角化石。鹿角化石硅化较强，通过区域地层与化石对比，研究区内的鹿角化石时代形成于中更新统早期。北二十家子镇附近的鹿角化石埋藏于黄土地层中，黄土为干燥寒冷的草原环境产物，分析得出研究区出现过温暖潮湿的气候环境，此后干燥寒冷的气候环境长期为主，进而推测哺乳动物受气候影响变化较大，乃至灭绝。

关键词: 辽宁省, 肿骨鹿, 化石, 第四纪, 对比

Abstract:

Quaternary mammalian fossils unearthed near north twenty town in Jianping , Chaoyang of Liaoning Province. According to analyzing ,it was the antler`s fossil of Megaceros and developed from the warm moisture steppe ecosystem , Cenozoic in Middle Pleistocene. The fossil was strong siliconized. Contrast regional stratigraphy with fossil , it formed in the early Pleistocene. The antler`s fossil was buried in loess soil. Loess was result of dry and cold conditions.So it had been warm and moisture,and became dry and cold after a period . Presumably mammal was affected by climate change and died out .

Key words: Liaoning Province, Megaceros, Fossil, Quaternary, Contrast