English
聯系我們
網站地圖
郵箱
舊版回顧



霸王龍曾是“中等個”

文章來源:中國科學報   發布時間:2019-05-10  【字號:     】  

  現在,人們對霸王龍的祖先可能什么樣子有了更好的了解。研究人員發現了一個霸王龍新物種的兩塊化石。其被稱為Suskityrannus hazelae,生活在約9000萬年前,早于暴龍科進化成像霸王龍一樣的龐然大物。

  兩塊化石表明,霸王龍在體型很小時就已發育出很多特有的特征,比如肌肉發達的頭骨、寬大的嘴巴和能吸收震動的腳。“Suskityrannus讓我們得以一窺暴龍在接管地球之前的進化過程。”美國弗吉尼亞理工大學古生物學家Sterling Nesbitt說。

  霸王龍是地球上最大的捕食者之一,可能也是所有恐龍中最著名的物種。Nesbitt表示,很多人沒有意識到,像霸王龍這樣的巨型暴龍在地球上的統治時間驚人地短——它們只在恐龍滅絕前的1500萬年左右開始進化。

  古生物學家發現,在這些“巨人”出現之前的1.5億年,地球上早就生活著小型暴龍。但由于化石記錄的缺失,在這些巨獸進化之前發生了什么一直是個謎。

  S. hazelae填補了這一空白。1997年,研究人員在新墨西哥州發現了這種恐龍的第一具非常不完整的骨架。1998年,當Nesbitt還在上高中時,科學家又發現了第二塊更完整的化石。如今,Nesbitt和同事終于發表論文來描述這一發現。

  該團隊估測,第二只恐龍的臀部高1米、身長3米,體重在20~40公斤。骨頭顯示,它死時還是一只幼龍,所以該物種的體型可能更大,但肯定沒有霸王龍那么大。

  為何在如今的北美和亞洲游蕩的暴龍在成為龐然大物之前的1.5億年里一直保持中等體型,原因尚不清楚。但其他種類的恐龍,如鴨嘴恐龍和角龍,后來同樣擁有更大的體型,因此也許暴龍是在和它們的獵物同步進化。相關成果日前發表于《自然—生態與進化》雜志。




(責任編輯:侯茜)

附件:

專題推薦

相關新聞


© 1996 - 中國科學院 版權所有 京ICP備05002857號  京公網安備110402500047號  聯系我們

地址:北京市三里河路52號 郵編:100864

易旺彩票www.ywzuqiu.com www.213861.com | www.50047.com | www.880305.com | www.911871.com | www.95qv.com | www.040073.com | www.575049.com | www.900166.com | 216448.com | 355902.com | www.xj44.com | www.94oq.com | www.976876.com | 341553.com | www.2100.org | www.137264.com | www.981941.com | 983376.com | www.984971.com | www.843228.com | www.705224.com | www.684781.com | www.095301.com | www.538900.com | www.119212.com | www.612571.com | www.19in.com | www.e24.website | www.dq7.com | www.111837.com | www.732033.com | www.6562.top | www.3709.com | 幸运彩票www.5095a.com | www.tr39.com | 208899.cc | www.ew77.com | www.72709.com | www.36rz.com | 56jl.com | www.vo44.com | www.xu96.com | 博友彩www.371w.cc | www.6703.cc | www.61449.com | www.yk87.com | www.000700.com | www.654453.com | www.452199.com | www.272740.com | www.073993.com | www.553792.com | www.659666.cc | www.13236.com | www.87952.com | www.86651.cc | www.46505.com | www.176303.com | 凤凰彩票www.77802k.com | rs84.com | www.398686.com | www.664846.com | 748601.com | www.898903.com | www.748839.com | www.765192.com | www.ww61.com | www.279966.com | www.591028.com | www.834123.com | www.892900.com | www.975573.com | www.026897.com | www.841217.com | www.94sn.com | www.22695.cc | www.255869.com | www.4288.wang | www.182658.com | www.688242.com | www.220409.com | www.366994.com | www.4567.cn | www.26857.cc | www.010882.com | www.tt33.cc | www.09iq.com | www.80rf.com | www.07811.com | www.877088.com | 244654.com | 086864.com | 974695.com | 911018.com | 234025.com | 984959.com | 116658.com | 913557.com | 191081.com | www.9777.live | www.622073.com | www.254069.com | www.338761.com | 199644.com | www.232344.com | www.800335.com | www.yk5.cc | www.391.website | www.068571.com | www.167297.com | www.287797.com | www.697487.com | www.770085.com | 716631.com | www.996478.com | www.77206.com | www.699501.com | 397557.com | 637056.com | www.gt8.com | www.yu20.com | www.625566.com | www.265.date | www.13sy.com | www.dd76.com | www.e45.biz | www.ix86.com | 06sl.com | 412250.com | sx15.com | www.958005.com | www.777482.com | www.632181.com | www.967734.com | www.27768.cc | www.154559.com | www.594985.com | www.gp63.com | www.44rq.com | www.508764.com | www.641946.com | www.872184.com | 37556.com | 526676.com | 99福彩www.319989.com | www.xt76.com | www.9327.cn | www.039992.com | www.100059.cc | www.090005.com | www.4046.org | www.006356.com | www.113347.com | www.544877.com | www.654213.com | 79pk.cc | 8357.cc | www.3222.cc | www.6ws.cc | www.5328.link | www.9486.cc | www.7075.cm | www.916071.com | www.38613.cc | www.030035.com | www.111914.com | www.177633.com | www.555236.com | www.605212.com | www.651373.com | www.911012.com | www.m61.tv | www.77137.cc | www.570361.com | www.880054.com | 936044.com | 500万彩票www.35155a.com | www.oh60.com | www.746.com | www.011059.com | www.217577.com | www.590216.com | www.755433.com | 网易彩票www.560693.com | www.hf13.com | www.56gj.com | www.36132.com | www.24591.com | www.42967.com | www.297310.com | www.360039.com | 851114.com | www.697611.com | www.984698.com | www.965773.com | www.133845.com | www.658387.com | www.696285.com | www.718188.com | www.678880.com | www.791492.com | 633550.com | 602563.com | www.gm88.com | www.42098.com | www.051054.com | www.310463.com | www.387409.com | www.735342.com | www.847281.com | 964984.com | 彩宝www.cb3288.com | www.hg23.com | www.hd44.com | www.3040.site | www.275669.com | www.462123.com | www.760543.com | www.850000.com | www.176310.com | www.522516.com | 320848.com | www.vy30.com | www.11359.com | www.64395.com | www.270570.com | www.362869.com | www.902323.com | www.mk60.com | www.20xb.com | www.008623.com | www.130660.com | www.286149.com | www.686559.com | www.680109.com | www.457338.com | www.75xe.com | www.828084.com | www.23eb.com | 924811.com | 037973.com | 731463.com | 984297.com | www.137237.com | www.458040.com | 098365.com | 000184.com | 579457.com | 483178.com | 78274.com | www.484078.com | 638769.com | 大奖彩票www.dacp123.com | www.18pz.cc | www.94wf.com | www.101137.com | www.255123.com | 646759.com | 237083.com | www.09254.com | www.782276.com | www.483427.com | 彩神购彩www.csgc5.com | 657101.com | 948202.com | www.957054.com | www.778747.cc | www.974917.com | 皇家彩票www.hj7776.com | 大赢家彩票平台www.326675.com | www.95ze.com | www.7397.top | www.09028.com | www.81yg.com | www.0884.cm | www.88951.cc | www.092184.com | www.300556.com | www.83hi.com | www.20398.com | www.838017.com | www.970094.com | www.32iw.com | www.s43.net | www.10.org | www.31869.com | www.542567.com | www.8610.in | k34.cc | www.252605.com | 大赢家彩票平台www.715025.com | www.788369.com | www.363007.com | www.87ht.com | 844014.com | www.466607.com | www.0579.pro | www.976645.com | www.114460.com | www.j49.net | www.790156.com | www.29232.cc | 359695.com | www.466110.com | www.25fg.com | www.699607.com | www.7980.win | www.958406.com | www.071986.com | 599530.com | www.731231.com | www.02206.com | www.974473.com | www.656768.com | www.805467.com | www.671098.com | www.590785.com | www.638049.com | www.940452.com | www.797976.com | www.673238.com | www.563787.com | www.922957.com | 395001.com | 535469.com | 417703.com | www.cp2348.com | www.35996.com | www.63223.com | www.198577.com | www.365591.cc | www.445652.com | www.393324.com | www.593686.com | www.290021.com | www.095757.com | www.97803.com | www.00176.com | www.13445.com | www.003166.com | www.329108.com | www.839192.com | www.705936.com | www.672976.com | www.644407.com | www.pv24.com | www.47ly.com | www.025734.com | www.466.live | www.980294.com | www.033095.com | www.pr01.com | www.38zc.com | www.54gj.com | www.35699.com | www.58976.cc | www.ym46.com | www.10wo.com | www.73hu.com | www.28538.com | www.9430.cn | www.108161.com | www.130910.com | www.053624.com | 034546.com | 00ii.cc | www.mk58.com | www.q08.net | www.fr31.com | 68彩票www.68689y.com | www.ig35.com | www.n28.org | www.318153.com | www.666998.cc | www.580652.com | www.881334.com | www.784422.com | www.846806.com | 89by.cc | www.5234.pw | www.550487.com | www.665486.com | www.664755.com | www.781334.com | www.119459.com | www.036023.com | www.819810.com | www.715723.com | www.zd.com | www.85cc.cc | www.92514.com | www.139507.com | www.77675.com | www.678399.cc | www.576169.com | 552211.com | 881547.com | www.910255.com | www.613203.com | www.585766.com | www.652165.com | 6538.net | 9861.biz | www.jv46.com | www.2398.vip | www.11916.com | www.9129.net | www.137242.com | www.457378.com | www.290733.com | www.697676.com | 365183.cc | 421065.com | www.957142.com | www.781047.com | www.306301.com | www.37283.cc | www.305851.com | www.861553.com | www.1995.club | www.123417.com | 53331.cc | www.918883.com | www.382856.com | www.527144.com | www.290255.com | 110637.com | www.905713.com | www.7844.vip | www.25380.com | www.45663.com | www.91796.cc | www.881677.cc | 989582.com | 837949.com | 796845.com | 954897.com | 963491.com | 092234.com | www.825639.com | 988090.com | 754208.com | www.02070.com | www.8656.me | www.354013.com | www.233727.com | www.96ip.com | www.nn20.com | www.z88.club | www.cp9288.com | 天下彩www.458689.com | www.mx3.cc | 803750.com | 265192.com | 403234.com | www.3652.in | www.4000.live | www.0508.cn | www.30587.com | www.820638.com | 137492.com | www.ue75.com | www.32364.com | www.7105.vip | www.6184.biz | www.3611.in | www.87833.com | www.271537.com | www.299615.com | www.000248.com | www.022490.com | www.408168.com | www.380452.com | www.896002.com | www.798851.com | www.680169.com | www.630698.com | www.503158.com | www.377550.com | www.918857.com | www.919504.com | www.770255.com | www.920868.com | www.959869.com | www.779803.com | www.994761.com | www.819735.com | www.630466.com | www.617649.com | www.868799.com | 826332.com | www.221.xyz | www.7375.pw | www.31098.com | www.10240.cc | www.4060.vip | www.46034.com | 540814.com | 285266.com | www.909997.com | www.820515.com | www.ib46.com | www.nz83.com | www.mm26.com | www.62jg.cc | www.30il.com | www.04kv.com | www.im38.cc | www.951156.com | www.879335.com | 利彩www.57578g.com | 300791.com | 082505.com | 幸运彩票www.luck808.com | ei56.com | 590185.com | 六冠彩票www.liuguan000.com | 870252.com | 610572.com | www.451178.com | 979267.com | 705244.com | 111805.com | 022340.com | www.999894.com | www.873952.com | www.rb24.com | 42in.com--www.bet236.com | 776811.com | www.896342.com | www.2476.com | www.1165.vip | www.466879.com | www.791966.com | www.563969.com | www.586037.com | www.590800.com | www.510177.com | www.254599.com | www.299721.com | www.111205.com | www.319753.com | www.521465.com | www.269109.com | www.154233.com | www.cp7238.com | www.567334.com | www.872005.com | www.168998.cc | www.689489.com | www.396320.com | www.329368.com | www.211344.com | www.059758.com | www.665456.com | www.42654.com | kj30.com | www.046169.com | 615289.com | www.297097.com | www.ps3.cc | www.520046.com | www.21tw.com | 234997.com | www.56208.com | www.990203.com | www.743910.com | www.49hj.com | 177094.com | f88.cc | www.934594.com | www.93lt.com | www.51go.com | www.c89.club | www.xj88.cc | www.3029.vip | www.8598.net | www.17157.com | www.90gl.com | www.380469.com | 679502.com | 博亿彩票www.699by.com | 133297.com | 964948.com | 594775.com | 829780.com | 863007.com | www.22314.com | www.120139.com | www.141486.com | www.886329.com | 308129.com | 创富彩票www.cf9900.com | www.7245.org | www.626.bid | 017787.com | 273235.com | 954792.com | www.384004.com | 万历彩票www.77114r.com | 324342.com | pe83.com | www.63681.cc | www.718357.com | www.638126.com | www.943088.com | www.793159.com | www.700348.com | www.544117.com | www.427734.com | www.668833.cc | www.529388.com | 556174.com | www.6sn.cc | 254268.com | 586763.com | 516950.com | www.827856.com | www.484671.com | www.686332.com | www.387101.com | www.492189.com | www.193458.com | www.313619.com | www.009296.com | www.038230.com | www.128723.com | www.35386.com | www.04pr.com | www.488945.com | www.883790.com | www.459943.com | www.039063.com | 526680.com | www.726260.com | www.3958.biz | 423711.com | www.229440.com | 彩票大家乐www.21202j.com | www.686661.com | www.52793.cc | 网易彩票www.554363.com | www.874977.com | www.964948.com | www.641011.com | www.oo82.com | www.gr87.com | www.om81.com | www.173092.com | www.145633.com | www.30070.com | www.248415.com | pk17.cc--pk17.cc | www.322390.com | www.979612.com | 网易彩票www.060wy.com | 15144.com | www.726487.com | www.1549.vip | www.26jy.com | www.02782.com | 幸运众彩www.108097.com | 277153.com | 231739.com | 974584.com | www.986247.com | www.579010.com | 大赢家彩票平台www.791571.com | www.41324.com | www.157197.com | www.363455.com | 4891.biz | www.a81.net | 华夏彩票www.hx1111.com | 134564.com | www.970925.com | www.811518.com | www.558112.com | 947496.com | www.935708.com | 724894.com | 500彩票www.500109.com | 38425.cc | 004987.com | 358476.com | www.ds16.com | 870267.com | www.3290.com | 天天彩票www.196880.com | www.216922.com | www.307557.com | www.868808.com | 196405.com | 6668.tm | www.cp8811.cc | 彩票大家乐www.21202w.com | www.sb61.com | www.901075.com | www.394751.com | www.401224.com | www.132623.com | www.417475.com | www.765955.com | www.592908.com | 凤凰彩票www.452817.com | www.811312.com | www.10vi.com | www.610339.com | 500彩票网www.61655p.com | 019294.com | www.925130.com | 彩乐乐www.3005x.com | 网易彩票www.085wy.com | www.988049.com | www.646739.com | www.618574.com | www.399917.com | www.289327.com | www.17539.com | www.4529.me | www.6px.com | www.wd16.com | www.89iy.com | 082637.com | www.7758.cc | www.2191.cc | www.234868.com | www.33849.com | www.555155.com | 987541.com | www.224405.com | www.115820.com | www.62752.cc | www.cai7979.com | www.2948.pw | www.501071.com | www.483990.com | www.285852.com | www.592983.com | www.322343.com | www.165092.com | www.7758.online | www.1768.biz | www.078089.com | www.3933.in | www.235104.com | www.216136.com | www.987448.com | www.913593.com | www.566231.com | www.414331.com | www.156.in | www.70098.cc | www.071890.com | www.582735.com | www.790561.com | www.227012.com | www.440084.com | www.675.live | www.ld7.com | www.557.cm | www.th06.com | www.1705.shop | www.053967.com | www.66658.com | www.026432.com | www.661337.com | www.796070.com | www.289010.com | www.35500.com | www.078917.com | www.12rm.com | www.57821.cc | 易盈彩票www.7793u.com | www.782988.com | www.9332.biz | www.241044.com | www.969464.com | 108489.com | www.p48.bid | 909458.com | 483904.com | www.9755.wang | www.tq88.com | 056543.com | www.994624.com | qw46.com | www.286.in | www.66vc.cc | www.wk10.com | 973430.com | www.7016.biz | www.28nl.com | 500彩票www.857981.com | www.466559.com | www.cp320.com | 612963.com | 521461.com | cp728.com | 980811.com | www.762347.com | www.758851.com | www.406676.com | www.713132.com | www.946939.com | www.517058.com | www.884466.com | www.10lp.com | www.70294.com | www.057085.com | www.48047.com | www.0554.loan | www.485.biz | www.17719.cc | www.50qz.com | www.fp6.com | www.44029.com | www.70697.com | www.2567.xyz | www.42zo.com | www.cg43.com | 365538.cc | 378847.com | 4299.biz | www.46aa.com | 天下彩www.481770.com | 829234.com | www.958254.com | www.642452.com | 539401.com | 031316.com | www.848562.com | www.908099.com | www.920769.com | www.615586.com | 527393.com | 104678.com | 011494.com | www.485.in | www.xy01.cc | 567184.com | 647922.com | www.976760.com | www.650359.com | www.7oa.com | www.4ot.com | 745522.com | www.930368.com | 635234.com | www.979701.com | www.787607.com | www.683699.com | 381432.com | 793052.com | www.769895.com | www.746969.com | www.512981.com | www.771029.com | www.4787.vip | www.810550.com | www.772365.cc | www.983464.com | www.576389.com | www.408935.com | www.22ja.com | www.06qn.com | www.96wu.com | www.012333.com | www.355998.com | www.096520.com | 017717.com | www.897778.com | www.531567.com | 969564.com | www.921357.com | www.879822.com | www.440826.com | www.m85.org | www.uf02.com | www.35442.com | www.vu76.com | 079885.com | www.957056.com | www.488076.com | www.187210.com | www.536815.com | www.927025.com | www.56558.cc | www.978985.com | www.502738.com | www.324631.com | www.657184.com | www.766246.com | www.737471.com | www.232111.com | 223249.com | www.222224.com | www.48gp.com | 997014.com | 亿发彩票www.802733.com | 658536.com | www.736208.com | www.021074.com | www.275505.com | www.688294.com | www.z88.top | www.xv35.com | www.56pu.com | www.520826.com | 781462.com | 793499.com | 429027.com | www.774161.com | www.68rb.com | 金利丰彩票www.620958.com | www.jw11.cc | 网易彩票www.07163r.com | 303001.com | www.812953.com | www.cp9697.com | 18W彩票www.390706.com | www.237675.com | www.989162.com | www.806031.com | 26086.com | www.954525.com | www.635710.com | www.028007.com | www.8098.cm | 692231.com | www.sa60.com | 085730.com | 647241.com | 250142.com | www.954205.com | www.838557.com | www.434750.com | www.333564.com | www.0865.cc | 大赢家彩票平台www.377591.com | 博乐彩票www.35918w.com | www.oa06.com | 507332.com | www.3346.net | 377231.com | 487744.com | 922705.com | www.789050.com | www.272001.com | www.304043.com | www.6757.com | 333244.com | 163315.com | www.984711.com | www.800579.com | 876173.com | www.667972.com | www.0462.net | 033901.com | www.to1.com | 福利彩票www.99677m.com | www.106258.com | www.48499.cc | www.130907.com | www.283928.com | www.104293.com | 564438.com | www.882099.com | www.845787.com | www.938969.com | www.299813.com | www.052110.com | www.35iy.com | 905566.cc | www.21ae.com | www.949664.com | www.53pr.com | www.oj45.com | www.5301.vip | www.za38.com | 568870.com | 220232.com | www.9001.loan | www.139350.com | www.627186.com | 瑞彩网www.809215.com | bl93.com | 772431.com | www.233412.com | 吉利彩票www.66376x.com | 951475.com | www.335757.com | 029794.com | 611510.com | www.839776.com | www.500866.cc | www.093451.com | www.11sc.com | www.rq88.cc | 乐彩网www.lcw199.com | 834427.com--8894.com | 420166.com | www.876112.com | www.810849.com | www.433859.cc | www.309568.com | www.378533.com | www.088249.com | www.36yz.com | www.268961.com | www.732880.com | www.091082.com | www.466017.com | www.779722.com | www.2415.vip | 500彩票www.50026h.com | www.63226.com | www.36396.com | www.51os.cc | 47sb.com | www.0001.site | www.656613.com | www.536817.com | www.611990.com | www.639509.com | www.280016.com | www.064414.com | www.709728.com | www.xg22.com | 252876.com | www.986413.com | 057090.com | www.856198.com | 649868.com | www.911807.com | www.cp8886.com | 386390.com | 126039.com | www.912264.com | www.683888.com | www.763512.com | www.514122.com | www.826779.com | www.691602.com | www.767718.com | www.453482.com | www.073877.com | www.737111.cc | www.155282.com | www.334593.com | www.3761.vip | www.81387.com | www.017942.com | www.758750.com | www.591247.com | www.394418.com | www.180700.com | www.060050.com | www.7867.biz | www.825818.com | www.576649.com | www.408178.com | www.151458.com | www.cp2776.com | www.1654.top | www.1337.com | www.688843.com | www.326561.com | www.756258.com | www.183828.com | www.608681.com | www.597038.com | 547080.com | www.982147.com | 520661.com | www.878535.com | www.008801.com | www.21555.cc | www.qw61.com | www.cp7587.com | www.31eg.com | www.632508.com | www.85550.cc | www.148445.com | www.220275.com | www.002924.com | www.359697.com | www.336992.com | www.068956.com | www.256520.com | www.8192.cn | www.350863.com | www.006230.com | www.0631.org | www.03ma.com | www.5010.in | www.0914