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

皇家彩票www.hj7776.com www.626023.com | www.22062.com | www.247922.com | www.636366.com | 949586.com | www.cp3391.com | www.05621.com | www.180903.com | www.737725.com | www.621981.com | www.928870.com | www.000.me | www.333552.com | www.435002.com | www.640029.com | 825949.com | www.142561.com | www.858245.com | www.996791.com | 364392.com | www.426159.com | www.571721.com | www.741704.com | www.820273.com | www.521071.com | www.028943.com | www.zc43.com | www.093371.com | www.507752.com | www.401794.com | www.838109.com | www.6635.top | www.601229.com | www.918514.com | 915605.com | www.299027.com | 444088.com | www.479.tv | www.000077.com | www.387238.com | www.911433.cc | 752986.com | 792264.com | 967372.com | www.49wr.com | www.67844.cc | www.656713.com | 115091.com | www.25466.com | www.585440.com | www.td55.com | www.71478.com | www.326190.com | www.587676.cc | www.587675.com | www.699032.com | www.908116.com | www.987737.com | 376903.com | 216259.com | www.mk25.com | www.47229.com | www.237228.com | www.780278.com | www.838183.com | 590049.com | www.82du.com | www.7708.xyz | 279117.com | www.292307.com | www.689342.com | www.4054.cc | www.201479.com | www.366630.com | www.590775.com | www.808446.com | www.vm9.cc | www.67tw.com | www.93109.com | www.166060.com | www.931709.com | www.9134.com | www.062619.com | www.325713.com | www.5969.org | www.3047.com | www.3808.net | www.8691.me | www.137354.com | www.530909.com | www.v42.shop | www.470.cm | www.57889.com | www.365441.cc | www.zx04.com | 203557.com | www.211838.com | www.639209.com | 618618.cc | www.66798.cc | www.254619.com | www.354654.cc | www.875013.com | www.76656.cc | www.848928.com | 125065.com | www.797311.com | www.999991.com | www.kw02.com | www.6222.net | www.081946.com | 443998.com | www.13477.com | www.255950.com | www.53564.cc | www.100700.com | 349100.com | www.9421.top | www.648437.com | www.775905.com | www.639544.com | www.948621.com | 961034.com | 357886.com | 981252.com | www.dm09.com | www.76225.com | www.258268.cc | www.704422.com | www.587202.com | 292509.com | 乐迎彩票www.114149.com | 706058.com | 602636.com | www.se40.com | www.0573.pro | www.20505.cc | www.076735.com | 421123.com | www.985025.com | 956654.com | 大赢家彩票平台www.221095.com | www.lx84.com | www.45lb.com | 87235.com | www.831144.com | 865775.com | www.zo82.com | www.095046.com | www.432684.com | www.53ra.com | www.003480.com | www.494002.com | www.922809.com | 482215.com | www.35ov.com | www.25461.com | www.193711.com | www.707920.com | www.993386.com | www.79ni.com | www.011465.com | www.293136.com | www.704433.com | 369217.com | www.1593.com | www.554255.com | www.996618.com | 572466.com | www.4534.top | www.135998.com | www.695745.com | 087356.com | www.0337.net | www.250250.cc | www.695935.com | 840850.com | www.ws23.com | www.426011.com | www.942717.cc | www.ip07.com | www.520070.com | www.965232.com | www.3578.vip | www.177800.com | www.22891.cc | 064242.com | www.987.ren | www.310500.com | www.870735.com | 614558.com | www.0791.space | www.530544.com | www.cai2400.com | www.8327.xyz | 139605.com | 奔驰彩票www.29178d.com | www.358547.com | 01929.com | ce72.com | www.wr11.com | www.55uo.com | www.025087.com | www.113580.com | www.126642.com | www.481163.com | www.566528.com | www.590336.com | www.850218.com | 174932.com--09320.com | 617429.com | 944408.com | www.898226.com | www.832365.com | www.684005.com | www.585578.com | 905989.com | 凤凰彩票www.77802t.com | www.de6.com | www.44od.com | www.43862.com | www.008215.com | www.320009.com | www.367144.com | www.730167.com | www.878917.cc | 凤凰Vwww.www.fh7557.com | 576041.com | www.7584.vip | 816484.com | www.fn.com | www.nk81.com | www.98il.com | www.67277.com | www.292076.com | www.366037.com | www.497392.com | zz12.cc | www.02yy.com | www.055338.com | www.521.cx | www.57077.cc | www.163928.com | www.nu42.com | www.9386.net | www.21385.cc | www.59093.com | www.268098.com | 福彩www.2109g.com | www.38yl.com | www.098523.com | www.79vf.com | www.028662.com | www.719520.com | www.933311.com | www.5nd.com | www.001105.com | www.326243.com | www.690171.com | 49xy.net | www.ub70.com | www.85554.cc | www.299726.com | www.878675.com | www.313044.com | 960141.com | ce72.com | 58彩www.88858c.com | www.1533.net | www.6545.com | www.44159.cc | 544661.com | www.9cz.com | www.027043.com | www.as94.com | www.7781.org | www.021063.com | www.547318.com | www.799833.com | 43922.com | www.6864.shop | www.84044.cc | www.448999.com | www.44565.com | www.320043.com | www.700454.com | www.2888.biz | www.126649.com | www.534478.com | www.ms19.com | www.p92.xyz | www.5964.biz | www.011684.com | www.63234.cc | www.127762.com | www.287819.com | www.342055.com | www.961603.com | www.16cn.com | www.64fc.com | www.2449.top | www.032328.cc | www.217952.com | www.180528.com | www.88sbet.com | www.p15.com | www.72pv.com | www.1031.biz | www.37967.cc | 932337.com | www.pk96.com | www.95273.com | www.087099.com | www.897651.com | www.1893.com | www.100360.com | www.369740.com | 882355.com | www.3053.org | www.226556.com | www.145775.com | www.521444.com | www.ny94.com | www.42lh.com | www.490013.com | www.540059.com | www.795252.cc | www.944828.com | 703673.com | 371868.com | www.zu09.com | www.052145.com | www.368931.com | www.dj80.com | www.207549.com | www.579037.com | 924904.com | www.559155.com | www.932174.com | 874242.com | www.cp3768.com | www.84am.com | www.033914.com | www.435315.com | www.yw62.com | www.020302.com | www.326108.com | www.953739.com | www.872936.com | 738875.com | 713359.com | www.kw27.com | www.36vt.com | www.973990.com | www.936261.com | www.865963.com | www.a57.org | www.730692.com | www.607790.com | www.676330.com | www.684955.com | www.549644.com | www.824182.com | www.yu87.com | www.ga24.com | www.628434.com | www.869726.com | 吉利彩票www.80075f.com | www.on69.com | www.56028.com | www.17709.cc | www.38353.cc | www.28uo.com | www.xm81.com | www.44302.com | www.93812.cc | www.94xi.com | www.21101.cc | www.137554.com | 750014.com | www.120339.com | www.929949.com | www.919986.com | www.874971.com | www.0956.cc | www.71671.com | www.117561.com | www.126341.com | www.626891.com | 185276.com | 620536.com | www.961682.com | www.969681.com | 0669.org | 220433.com | www.9658.bid | www.81058.com | www.695139.com | www.077187.com | www.219415.com | www.84iy.com | www.4315.cn | www.800.gg | www.115585.com | www.386432.com | www.588157.com | www.571075.com | www.575793.com | www.271623.com | www.316061.com | www.326632.com | www.315111.cc | www.78xx.com | www.9943.com | www.090931.com | www.68952.cc | www.5132.live | www.660014.com | www.832456.com | www.yh81.cc | www.3781.wang | www.597817.com | www.9985.com | www.89957.cc | www.96571.com | www.029587.com | www.122583.com | www.157188.com | 153277.com | 481018.com | 751274.com | 278013.com | 89422.com | 550496.com | www.fz39.com | www.281555.cc | www.364462.com | www.660415.com | www.982643.com | www.960350.com | www.940798.com | www.952423.com | www.920046.com | www.960167.com | www.952942.com | www.883609.com | 070966.com | www.436681.com | www.430189.com | www.509537.com | www.575725.com | www.974914.com | www.874036.com | www.948140.com | www.103656.com | www.088570.com | www.055533.com | www.th56.com | www.5095.cm | www.182801.com | www.386344.com | www.685096.com | www.851036.com | 643518.com | 731554.com | www.233714.com | www.525729.com | www.779229.com | 798194.com | www.331237.com | www.354.live | www.15396.cc | www.4711.biz | www.82yf.com | www.80850.com | www.404735.com | www.735252.cc | www.302537.com | www.229716.com | 665940.com | 092760.com | 205527.com | www.43vu.com | www.76qd.com | www.13iz.com | www.i22.cc | 781604.com | www.0gv.com | www.932879.com | www.801578.com | www.958574.com | www.840808.com | www.688660.cc | www.637365.cc | www.962978.com | www.bx96.com | www.62925.cc | www.03572.com | www.7799.vip | www.qe50.com | www.83jj.com | www.994.vip | www.5676.cn | www.8357.xyz | www.68275.com | www.226059.com | www.940235.com | www.809459.com | www.14062.com | 033976.com | www.6952.biz | www.3077.pro | www.311907.com | www.259980.com | www.231976.com | www.216788.com | www.761805.com | www.702328.com | www.622930.com | www.557638.com | www.415414.com | www.287769.com | www.720538.com | www.750426.com | www.737010.com | www.662793.com | 幸运彩票网www.33598d.com | www.99it.cc | www.80052.com | www.97796.cc | www.47676.com | www.py96.com | www.w47.club | www.jz38.com | 彩69www.974674.com | 639490.com | 128401.com | 8722.com | 福彩www.16878b.com | www.id42.com | www.fl05.com | www.do04.com | www.dh08.com | www.pc42.com | 网易彩票www.26163m.com | 973254.com | 477920.com | 791432.com | 彩票5www.550241.com | 彩票坊www.759585.com | 984938.com | www.37251.com | www.065533.com | www.95333.com | www.569120.com | www.763333.com | www.812879.com | www.696455.com | www.975400.com | 664654.com | 498358.com | 156038.com | 803606.com | www.ls1.cc | www.936002.com | www.533638.com | www.435787.com | www.418283.com | www.62is.com | www.92932.com | www.023742.com | www.677366.com | www.881623.com | 166085.com | 091339.com | www.cp241.com | www.237291.com | www.273231.com | www.241766.com | www.239513.com | 259050.com | 702162.com | www.cai5455.com | www.922379.com | www.v16.in | www.575137.com | www.490495.com | www.373793.com | www.731838.com | www.103725.com | www.102608.com | www.345433.com | www.324900.com | www.882062.com | 大赢家彩票www.548611.com | 21569.com | www.020168.com | www.8983.cn | www.33675.com | www.108163.com | www.91005.com | www.115789.com | www.840844.com | www.69sa.com | www.452245.com | www.373572.com | www.617066.com | www.703336.cc | 211410.com | xpj345.com | www.cai5656.com | 528372.com | www.875052.com | www.cp078.com | www.d74.net | www.199463.com | 954126.com | www.916707.com | 816939.com | 980184.com | www.e73.net | www.86vd.com | www.03377.cc | www.09099.cc | www.6900.vip | www.83og.com | www.67fq.com | www.640622.com | www.757104.com | www.692630.com | www.696440.com | www.954575.com | www.155341.com | www.104101.com | www.006840.com | www.197033.com | www.702127.com | www.616447.com | 962984.com | www.34626.com | www.871026.com | www.809080.com | www.31963.cc | www.994903.com | 中国福利彩票www.34788w.com | 640878.com | www.12009.cc | www.641248.com | www.821446.com | www.24747.cc | www.228240.com | www.520509.com | 886427.com | 国彩网www.guocai667.com | www.rv38.com | 中彩www.zcwf3.com | 727569.com | 770494.com | 631138.cc | www.in.com | 236101.com | 078013.com | 680126.com | www.u16.cc | www.r15.xyz | www.08188.cc | www.40mz.com | 杏彩www.00840o.com | www.tp34.com | www.33304.com | www.0081.com | www.70383.com | www.004235.com | www.2100.in | www.92oq.com | www.43267.com | www.88615.com | www.009575.com | www.385871.com | www.765764.com | www.866866.com | dg31.com | www.62vl.com | www.4159.biz | www.10cs.com | www.65915.com | www.636236.com | www.454247.com | 911678.com | www.632790.com | www.7338.cm | www.ts27.com | www.26gy.com | www.234333.cc | www.531022.com | www.609397.com | www.796254.com | www.740171.com | www.818187.com | www.940628.com | www.752234.com | www.763711.com | 964647.com | 047264.com | 948776.com | 097787.com | 150513.com | www.905686.com | www.930256.com | www.887048.com | www.870895.com | www.53561.cc | www.358146.com | 032717.com | www.088034.com | 974484.com | www.876022.cc | www.588509.com | www.284884.com | www.099509.com | www.00274.com | www.61rg.com | www.vp68.com | 160344.com | 137754.com | www.65fo.com | www.58np.com | www.1dz.com | w21.top | 瑞彩网www.809217.com | 793400.com | www.981910.com | www.353239.com | www.138285.com | www.87499.cc | www.6231.pw | www.ve34.com | www.88hb.cc | www.yn09.com | www.007570.com | ty1.cc | www.982578.com | 529036.com | 854627.com | www.977503.com | www.5746.org | www.038050.com | 369077.com | www.ci72.com | www.907178.com | 369041.com | www.603969.com | www.606266.com | www.991469.com | www.200571.com | www.229619.com | www.9967.net | www.179849.com | www.eo75.com | www.vn30.com | www.688751.com | 72424.cc | 223693.com | 095120.com | 210439.com | www.907220.com | www.801111.com | www.59732.cc | www.088585.com | www.054207.com | www.00272.com | www.412.mobi | www.170003.com | www.365702.cc | www.878456.com | 凤凰彩票www.77803y.com | 亚投彩票www.ya190.com | 169326.com | 654493.com | www.183952.com | 447375.com | 506201.com | 500彩票网www.676065.com | 4316.biz | www.134830.com | www.bq03.com | www.780648.com | www.832239.com | www.cai6784.com | www.2995.cn | www.496990.com | 809350.com | 781003.com | 698313.com | 143618.com | 640059.com | 6736.biz | 706431.com | www.41417.com | www.40925.com | www.97tb.cc | www.64238.com | www.8568.bid | www.7312.bid | www.949175.com | www.071890.com | www.022699.com | www.073489.com | www.975245.com | www.669424.com | www.404445.com | 248.com | www.886117.com | www.558902.com | www.302088.com | www.288255.com | www.276659.com | www.268191.com | www.80303.cc | www.ai3.com | 57198.com | www.788685.com | www.917448.com | www.765848.com | www.19989.com | www.cai4977.com | 225702.com | www.95379.cc | www.71582.cc | www.993282.com | www.112505.com | 969425.com | www.450033.com | www.8na.com | www.69ra.com | www.13018.com | www.6515.biz | www.55563.cc | www.199816.com | www.500158.com | www.303655.com | www.33iq.com | www.22wl.com | www.113599.com | www.51001.com | 129980.com | www.537701.com | www.772243.com | 818752.com | www.950042.com | www.628099.com | www.84mg.com | 69eb.com | www.800785.com | www.848853.com | 042883.com | 714283.com | 994247.com | 900591.com | www.go78.com | www.240424.com | www.76eq.com | www.48968.com | www.797073.com | www.557849.com | www.603587.com | www.622077.com | www.vq87.com | 9492.me | 4327.biz | 988790.com | 526950.com | 974135.com | www.6595.vip | www.622171.com | www.303732.com | www.517289.com | www.495312.com | www.149953.com | www.673202.com | www.937714.com | 753601.com | www.660023.com | www.467560.com | www.277594.com | www.151052.com | www.33092.com | www.2601.wang | www.93qt.com | www.kc39.com | www.ki0.com | 凤凰彩票www.5091n.com | www.87585.com | vj07.com | www.957954.com | www.766300.com | www.220437.com | www.9862.biz | 751971.com | www.8939.cc | www.16389.cc | www.282613.com | 877565.com | www.713323.com | www.mu02.com | 13e彩票www.963220.com | www.yv04.com | K彩www.kc66.com | 18W彩票www.390706.com | www.99245.cc | www.326.in | www.259781.com | www.6805.com | www.4496.cn | www.458559.com | www.888272.com | www.044.org | www.355190.com | www.7659.top | www.0145.cm | www.nh51.com | 462226.com | 598362.com | www.956073.com | www.852956.com | www.34ci.com | www.104644.com | www.946921.com | www.371716.com | www.608003.com | www.139003.com | www.88550.cc | 771704.com | 996100.com | 9097.biz | 323873.com | 发彩www.50732g.com | at86.cc | www.19lj.com | www.192564.com | 709686.com | 712506.com | www.853971.com | 118342.com | 829832.cc | 076644.com | www.7980.com | www.3169.win | www.235815.com | www.122827.com | www.03206.com | www.gu70.com | www.zq93.cc | 088034.com | www.988144.com | 226886.com | 747695.com | www.834643.com | www.899118.com | 765504.com | www.15vo.com | www.762103.com | www.92se.com | www.385618.com | www.315916.com | www.575726.com | www.590611.com | www.rs53.com | www.fh84.com | www.352932.com | www.020099.com | www.125428.com | dd00.cc | www.984218.com | www.751604.com | www.8529.top | www.34qg.com | www.ax48.com | www.551773.com | www.550182.com | www.386673.com | www.160323.com | www.050015.com | www.2211.biz | www.177838.com | www.301336.com | www.109047.com | www.086.hk | www.36sj.com | www.fq6.cc | www.659.pw | www.014286.com | www.334229.com | www.349133.com | www.520253.com | www.284065.com | www.7995.com | www.oc71.com | www.60gl.com | www.oj70.com | www.899935.com | 中华彩票www.9149d.com | www.uq90.com | ul39.com | www.cai359.com | 204727.com | www.60964.com | www.53379.cc | www.01659.com | www.529648.com | www.678736.com | www.452224.com | 326519.com | www.9788.tv | www.123597.com | www.190596.com | www.28561.cc | www.96rp.com | www.ab00.com | www.am73.cc | 095404.com | 006541.com | 136446.com | www.764711.com | www.372021.com | 888977.com | 133554.com | 870133.com | www.905768.com | 201471.com | 66351.com | 137465.com | 天天彩票www.203882.com | www.fh24.com | 299264.com | www.964439.com | www.700936.com | www.64yh.com | www.0047.pw | www.480347.com | www.83376.com | www.480120.com | 629494.com | www.856622.com | www.654399.com | www.838916.com | www.801079.com | 331492.com | 686026.com | 809881.com | www.706836.com | www.323415.com | www.hh7.com | 308848.com | www.201198.com | www.718739.com | www.669907.com | www.322543.com | www.339466.com | www.126418.com | www.8626.com | www.426877.com | www.801192.com | www.060764.com | www.86wx.cc | 易彩堂www.55885m.com | www.192726.com | www.581760.com | www.971303.com | www.802512.com | www.017765.com | www.id88.com | 446519.com | www.044077.com | www.855233.com | www.774041.com | www.531904.com | www.720722.com | www.797713.com | 389.cc | www.01157.com | www.76585.cc | www.725649.com | www.077978.com | 847275.com | www.kj1398.com | 538134.com | www.25kb.com | 352355.cc | www.153075.com | www.605738.com | www.45496.com | www.719229.com | www.600707.com | www.096448.com | 389817.com | www.934562.com | 彩609www.c609.vip | 678414.com | 011009.com | www.511658.com | www.61778.com | www.586129.com | www.t50.org | www.48286.com | www.68uu.com | www.46420.com | www.51272.cc | www.901342.com | 49943.com | www.51123.cc | www.090076.com | www.132038.com | www.576950.com | www.247780.com | www.77537.com | www.948829.com | www.ad35.com | www.us98.com | cai0123.com | 930376.com | www.82933.com | 87ay.com | www.552257.com | www.506021.com | www.592973.com | www.317573.com | www.xiha.ph | www.987305.com | www.074101.com | www.fl80.com | 564178.com | www.9138.net | www.519308.com | www.615960.com | www.654824.com | www.453187.com | 028203.com | www.880651.com | www.66od.com | 964060.com | www.0121.cn | www.69699.cc | www.973810.com | www.901182.com | www.595395.com | www.590353.com | 大赢家彩票平台www.756202.com | www.235242.com | www.80455.cc | www.20eh.com | 彩神购彩www.csgc4.com | 330345.com | j12.cc | 0524