宜宾屏山首次发现侏罗纪时代脊椎动物骨骼化石

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1月6日，记者从屏山县获悉，该县大乘镇中坪村发现的疑似古脊椎动物骨骼化石，经四川省地矿局化探队工程师和古生物专家初步判定，该疑似骨骼化石为古脊椎动物化石。这也是屏山县首次发现侏罗纪时代脊椎动物骨骼化石。

         工程师进行现场踏勘


2014年12月，屏山县大乘镇中坪村村民潘定伦在开挖房屋地基基础时，在白色砂岩中发现一处“特殊石头”。起初，正在施工的潘定伦还以为挖到了人骨头，但是在外打工回来的儿子潘昌浓却并不这么认为，“人骨头怎么会和白色的砂岩长在一起，而且骨头已经全部石化。”这让年轻的潘昌浓起了疑心，决定将“人骨头”送往镇政府鉴定并上报。

       脊椎动物骨骼化石发掘现场



屏山县国土资源部门接到疑似骨骼化石报告后，立即派工作人员到现场进行踏勘。在踏勘现场，工作人员蹇兴晓又发现一根类似于动物肋骨的化石，埋藏于侏罗系中统沙溪庙组白色长石石英砂岩层中，距离上一根骨骼化石不足一米。而后经村民带路，又在附近发现疑似蛋化石数个。据当地村民介绍，早在解放以前修建房屋时就有发现一窝窝的团状石核，俗称“石胆”，因不知其作用便随意将其抛弃。工作人员将采集到的化石拍成照片，先后发给宜宾市二零二地质队和西安科技大学古生物专家进行鉴定，初步鉴定结果为古脊椎动物化石，具体是什么物种尚需进一步发掘验证。

“根据现场地理环境和岩层分析，初步判定该疑似动物骨骼化石为古脊椎动物化石。”6日，四川省地矿局化探队工程师柳伟波到屏山县现场踏勘后表示。古脊椎动物化石的首次发现, 对研究屏山县古生物、古地质、古气候具有重要价值，同时将为该县旅游产业带来新的景观。

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