畅玩棋牌游戏下载

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                                    1.  畅玩棋牌游戏下载 >> 新闻动态 >> 图片新闻

                                    图片新闻

                                    施氏慈母鸟

                                    发表日期:2019-03-22来源:放大 缩小

                                      鸟类演化的成功与其独有的生殖孵育系统密不可分。321日,周忠和、邹晶梅、巴约勒团队在英国《自然-通讯》(Nature Communications)杂志在线报道了世界范围内首个腹腔内含有蛋壳的灭绝鸟类——反鸟类化石,为研究古鸟类的生殖繁育提供了新的信息,进而为探知早期鸟类的演化历程提供了新的证据。

                                      该标本发现于中国甘肃玉门市,距今1.1亿年的早白垩世下沟组的湖相沉积物中,是一个全新的属种,被命名为施氏慈母鸟(Avimaia schweitzerae畅玩棋牌游戏下载)。标本保存在扁平的页岩内,头部虽然残缺,但是,体腔内基本成型的蛋壳(包括表层膜、角质层等)却被罕见地保存至今。

                                      ZUZHIQIEPIANHESAOMIAODIANJINGJIEGUOXIANSHI,DANQIAOYICHANGXIANBO,CHENGXIANLESHUANGCENGDEBINGTAIJIEGOU(ZHEIYESHISHOUCIZAIFANNIAODANHUASHIZHONGFAXIANSHUANGQIAO),YANJIURENYUANJUCITUICEZHEIZHICINIAOZAICHANLUANSHICHUXIANLEXIANSHENGPAXINGLEISUOCHANGJIANDE“XIEDANZHENG”,JINIAODANWEINENGJISHICHANCHUCONGERZHANGSHIJIANTINGLIUZAITIQIANGNEI。BUFENXIANSHENGNIAOLEIZAICHUYUSHENGCUNYALIJIAODADEQINGKUANGXIA,HUOZHEYOUYUYINGYANGQUEFADENGYUANYIN,HUICHUXIANZHEIZHONGZHENGZHUANG,ZAIYIXIEXIANSHENGDEGUILEIDONGWUZHONG,SHENZHIYIXIEXIJIAOLEIKONGLONGDEHUASHIZHONG,ZHEIZHONGQINGKUANGYEBIJIAOCHANGJIAN。

                                    畅玩棋牌游戏下载  YANJIUHAIFAXIAN,DANQIAOZUIWAICENGDEDANPIMOYOUXIAOQIULIZHUANGDEKUANGWUZHIGOUCHENG,ZHEIZHONGZHIMIDEQIUXINGKUANGWUKELIZUCHENGDEDANMO,CHANGCHUXIANZAIJIANGNIAOCHAOZHUZAIKAOJINCHAOSHIHUANJINGZHONGDEXIANSHENGNIAOLEIZHONG(RUANCHUN、YAZI,HUOLIENIAODENG),ZHEIZHONGJIEGOUKEYIGEJUECHAOSHIKONGQI,CONGERBIMIANXIANGYINGDEGANRANWENTI,ZHEIYUFANNIAOLEIJIUDIZHUCHAOBUFENYANMAIDANDEXIXINGJIAOWEIYIZHI,ERQIUXINGKUANGWUKELIBAOHUCENGDECUNZAIKENENGDAIBIAOYIZHONGJIAOWEIYUANSHIDENIAODANXINGTAI。

                                      CIWAI,ZAIBENJIANBIAOBENDETUIGUSUIPIANZHONG,HAIFAXIANLEYISISUIZHIGU。SUIZHIGUSHICIXINGNIAOLEIZAICHANLUANDESHIHOU,WEIDANTIGONGGAIYUANERDUOXINGCHENGYUZHANGGUKONGQIANGZHONG。RANER,DABUFENQIANRENBAODAODE“SUIZHIGU”YOUDAISHANGQUE,HENDUOSHIJISHANGSHIYOUBINGLIHUOZHEQITAYUANYINDAOZHI,ERZHEIJIANBIAOBENHANJIANDIJUYOULUANHESUIZHIGULIANGGEQUEZAODEJIANDINGXINGBIEZHENGJU,CONGERYOULIYUYANJIUZHEJIANDINGGUNIAOLEIDEXINGBIE,BINGJINYIBUTANJIUYUANSHINIAOLEIDEXINGBIEERTAIXINGTEZHENG。

                                      该项研究得到了国家自然科学基金委基础科学中心项目“克拉通破坏与陆地生物演化”,中科院国际人才计划(PIFI)项目以及中科院先导项目的资助。

                                      原文链接: 

                                    畅玩棋牌游戏下载TU1 SHISHICIMUNIAOZHENGXINGBIAOBENZHAOPIAN(Alida BailleulGONGTU)

                                    畅玩棋牌游戏下载TU2 SHISHICIMUNIAOFUYUANTU(Alida BailleulGONGTU)

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