English
聯系我們
網站地圖
郵箱
舊版回顧



【光明日報】我國古生物學家發現“長臂渾元龍”

文章來源:光明日報 齊芳   發布時間:2019-05-10  【字號:     】  

  北京時間5月9日出版的學術期刊《自然》以封面文章的形式發表了中國科學院古脊椎動物與古人類研究所王敏、鄒晶梅、徐星、周忠和的研究成果:發現侏羅紀具膜質翅膀的恐龍——長臂渾元龍,揭示了演化過程中“一條匪夷所思的征服藍天之路”。

  長臂渾元龍標本是2017年中國科學院院士周忠和帶領團隊在遼寧晚侏羅世地層考察時獲得的一件新化石,發現于燕遼生物群晚侏羅世早期的海房溝組(距今約1.63億年)。經過長達一年的室內修理、實驗和對比研究,研究團隊復原了渾元龍,它體長約32厘米,體重約306克,為雜食性。研究人員認為其代表一新的善攀鳥龍類。渾元龍的正型標本是目前已知最完整的善攀鳥龍類化石,為了解這類恐龍提供了大量形態和生態學信息。

  周忠和介紹,在脊椎動物漫長的演化史中,翼龍、鳥類和蝙蝠獨立演化出了形態迥異的飛行結構。相較翼龍和蝙蝠不完整的化石記錄,隨著不斷發現的帶羽毛恐龍和早期鳥類化石,尤其得益于我國中晚侏羅世的燕遼生物群和早白堊世的熱河生物群,有關鳥類飛行起源這一重要科學問題取得了重要進展,而擅攀鳥龍類的發現則揭示了“一條匪夷所思的征服藍天之路”。

  王敏研究員介紹,善攀鳥龍類是恐龍家族中最為怪異的類群,生活在中—晚侏羅世,迄今發現的僅有三個屬種:寧城樹棲龍、胡氏耀龍和奇翼龍。善攀鳥龍類形態特殊,儼然是恐龍和鳥類的“混合體”,一度被認為是和鳥類具有最近親緣關系的獸腳類恐龍。但已發現的標本或不完整,或屬于幼年個體,大量形態特征難以觀察,使其在演化樹上的位置撲朔迷離。2015年徐星研究員等命名的奇翼龍更加為這一類群增添神秘色彩——奇翼龍的前肢附著翼膜,還具有一根棒狀長骨,這樣的長骨在其他恐龍(包括鳥類)中沒有對應的同源結構,因此,奇翼龍被復原成類似翼龍那樣具有膜質翅膀而能夠滑翔。但奇翼龍的標本僅有一件,保存又不完整,因此對于棒狀長骨和翼膜的結構還存有爭議。

  長臂渾元龍的發現或將為這樣的爭議畫上句號。渾元龍在肱骨近端關節面、手指和腰帶形態方面明顯不同于其他善攀鳥龍類,并且具有原始鳥類那樣的尾綜骨,如此縮短的尾骨能進一步將身體重心前移,有利于在飛行、滑翔時保持穩定。更為重要的是,研究人員在渾元龍身上發現了和奇翼龍相似的棒狀長骨和翼膜(翼膜中保存有色素體),這一新發現為棒狀長骨和翼膜在善攀鳥龍類中的出現提供了確切無疑的證據。

  研究人員認為,侏羅紀善攀鳥龍類的膜質翅膀與鳥類翅膀的原理不同,是一種完全不同的飛行嘗試。渾元龍的前肢異常加長,甚至超過了中生代多數鳥類。王敏介紹,研究人員采用基于系統發育關系的主成分分析方法,認為善攀鳥龍類通過加長的肱骨和尺骨、第三手指,與棒狀長骨來附著膜質的翅膀,是“膜質翅膀和短掌骨”飛行模式;而鳥類、馳龍類和傷齒龍類則需要較長的掌骨來附著飛羽,是“羽毛翅膀和長掌骨”飛行模式。

  王敏說:“已知的善攀鳥龍類均生活在晚侏羅世,類似的膜質翅膀沒有在之后的白堊紀恐龍中出現。而由飛羽構成的翅膀自晚侏羅世出現就延續到白堊紀,經過漫長的演化最終形成了鳥類的羽翼,使后者成了多樣性最豐富的現生四足動物。善攀鳥龍類獨特的飛行結構或許代表了飛行演化的一次短暫嘗試。”

  (原載于《光明日報》 2019-05-10 08版)




(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

88彩票www.cp9829.com www.165608.com | 983564.com | www.oj27.com | www.5568.gg | www.093802.com | www.562546.com | www.772084.com | www.cm23.com | www.03190.com | www.81191.cc | www.321520.com | www.493509.com | www.839586.com | www.9089.biz | www.97zx.cc | www.34sf.cc | www.5050.live | www.65085.com | www.37269.cc | www.53151.cc | www.176342.com | www.632355.com | 968043.com | www.hx77.cc | www.313951.com | www.600023.cc | 9410.vip | www.1743.vip | www.059328.com | www.189883.com | www.277733.com | www.487805.com | www.834860.com | 305454.com | 169101.com | www.84vz.com | www.9479.vip | www.071716.com | www.295049.com | www.339447.com | www.778151.com | www.890923.com | www.dq87.com | www.068.net | www.057783.com | www.602418.com | www.618636.com | www.0090.site | www.96493.com | www.272125.com | www.635375.com | www.917273.com | 128294.com | www.147698.com | www.080812.com | www.dh48.com | 273506.com | www.791666.cc | www.054005.com | www.el62.com | 384878.com | www.c5.gg | www.934711.com | www.224422.cc | www.03ov.com | nw27.com | www.574800.com | www.370501.com | www.073204.com | www.679.net | 954207.com | www.ah69.com | www.48150.com | www.632450.com | 155844.com | www.6es.com | www.2311.vip | www.379332.com | hp06.com | www.41eu.com | www.019841.com | www.200038.cc | www.829280.com | 153770.com | 507411.com | www.wv44.com | www.208883.com | www.355063.com | www.689131.com | 557967.com | www.45lu.com | www.083306.com | www.185646.com | www.522058.com | www.877301.com | 285737.com | 3G彩票www.3991.cc | www.6379.biz | www.62322.cc | www.234531.com | www.716619.com | www.k16.com | www.131.in | www.xq74.com | 980701.com | www.610051.com | www.621017.com | www.057371.com | 651303.com | 彩客博www.8667s.com | www.19ld.com | www.6363.biz | www.7462.cc | www.166725.com | www.530516.com | www.836496.com | www.714477.com | www.582326.com | www.552411.com | www.750718.com | www.779138.com | www.902395.com | 大赢家彩票平台www.232775.com | www.11237.com | www.56979.com | www.570890.com | www.623769.com | www.963924.com | www.992287.com | 495344.com | ro56.com | www.243873.com | www.434420.com | www.445967.com | www.784122.com | www.855384.com | www.cp9586.com | www.pw71.com | www.2213.in | www.75477.cc | www.225860.com | www.306098.com | www.554403.com | www.666213.com | www.760033.com | 947203.com | 345719.com | 773047.com | 99662.com | www.cp9737.com | www.rl71.com | www.jq16.com | 亿万彩票www.771745.com | www.6027.me | www.202848.com | www.94277.com | www.pk80.com | www.ra00.com | 顶尖彩票www.168212.com | www.i61.vip | www.cai3451.com | www.n95.cn | www.mr99.com | www.w75.com | www.6854.cn | www.11583.cc | www.0944.me | www.8757.xyz | www.90543.com | www.1705.shop | www.3397.mobi | www.39wl.com | www.386279.com | www.678410.com | 彩票驿站www.2350u.com | www.a95.club | www.15ue.com | www.1057.vip | www.48607.com | 347522.com | 熊猫彩票www.222xm.cc | www.v08.top | www.z69.cc | www.47nq.com | www.44fg.com | www.026031.com | www.359594.com | www.zz37.cc | www.090705.com | www.518920.com | www.lt60.com | www.32078.com | www.52955.cc | www.188016.com | www.132807.com | www.334071.com | www.223515.com | www.117653.com | www.852310.com | www.da33.com | www.op83.com | www.9864.pw | www.92294.com | www.425626.com | www.811468.com | www.65qy.com | www.971741.com | www.9867.pw | www.069166.com | www.237704.com | 643816.com | www.cai6663.com | www.54cw.com | www.828.org | www.103476.com | www.110089.cc | www.161151.com | www.621946.com | 463228.com | www.ws79.com | www.et16.com | www.154535.com | www.298379.com | www.389877.com | www.789409.com | 99彩票www.994948.com | www.qj58.com | www.j41.me | www.40tc.com | www.365.cn | www.52335.cc | www.004570.com | www.223300.cc | www.985322.com | 096355.com | www.14vc.com | www.050321.com | www.116959.com | www.320232.com | www.480197.com | www.909114.com | 944707.com | www.hz34.com | www.16521.cc | www.88334.cc | www.153.gg | www.53772.com | www.622459.com | www.597559.com | www.680795.com | 958442.com | www.jm04.com | www.1741.cc | www.85678.com | www.050211.com | www.771411.com | 972100.com | 500彩票www.50064a.com | www.va24.com | www.c05.org | www.513.mobi | www.04155.com | www.57639.cc | www.701129.com | www.982904.com | www.853862.com | www.881845.com | www.917988.com | www.897474.com | www.886796.com | 339885.com | www.862761.com | 057369.com | www.564151.com | www.24476.com | www.739574.com | 968224.com | www.20hs.com | www.805295.com | 127814.com | 025351.com | 312592.com | www.76413.com | www.290303.com | www.427952.com | www.505111.com | www.558208.com | www.930086.com | www.999565.com | 141696.com | www.42298.com | 488525.com | www.7174.biz | www.23wa.com | www.hj23.cc | www.779976.com | www.xd54.com | C9999www.318548.com | www.77205.com | www.365175.cc | www.36ng.com | www.717853.com | www.108126.com | www.868578.com | www.970934.com | www.946631.com | www.770757.com | www.72153.cc | www.22aj.com | www.937888.com | www.362292.com | www.45630.com | www.k43.cc | www.852864.com | www.925997.com | www.138777.com | www.11016.com | www.62aq.com | www.956442.com | 01df.com--18vn.com | www.793602.com | www.075939.com | www.797744.com | 120904.com | www.115981.com | 全民福彩www.qmfc7.com | www.03730.cc | www.2549.org | www.63672.com | www.238057.com | www.322621.com | www.907342.com | www.377907.com | www.169924.com | www.40075.com | 365065.cc | www.611113.com | www.230329.com | www.1zv.cc | www.482996.com | www.677299.com | 355784.com | 449771.com | 516508.com | www.984971.com | 500彩票www.50051x.com | www.2979.xyz | www.57256.cc | www.353486.com | www.164755.com | www.397405.com | www.680288.com | www.571324.com | www.936073.com | www.872474.com | www.913195.com | www.292877.com | www.xj81.cc | 120289.com | www.685213.com | www.039968.com | www.06995.com | www.17qc.com | www.04yy.com | 大赢家彩票www.399130.com | 汇丰彩票www.hf0886.com | 758049.com | www.9985.online | www.515976.com | www.2546.vip | bh42.com | www.826813.com | www.130673.com | www.06549.com | www.cai8345.com | www.ip8.com | www.984537.com | www.363119.com | www.xm77.com | www.1al.com | www.576425.com | www.18532.com | www.58737.cc | www.080863.com | www.06783.com | www.1813.me | www.60tv.com | www.33th.com | www.4le.cc | www.536.cn | www.046007.com | 850874.com | www.089717.com | www.031896.com | www.220039.com | 083511.com | www.351656.com | www.740402.com | www.dp04.com | www.692192.com | 32213.com | www.0419.date | www.xe97.com | 733744.com | www.603323.com | www.751760.com | www.947167.com | www.845450.com | www.3747.vip | 984389.com | www.557030.com | www.33442.com | 290976.com | 034971.com | www.960927.com | www.1611.hk | www.355610.com | 161819.com | www.157024.com | www.868178.com | www.ll61.com | www.rk70.com | www.011115.com | 309052.com | 675714.com | www.706608.com | www.63mu.com | www.020229.com | www.248122.com | www.093139.com | 快彩www.81678q.com | www.975485.com | www.394844.com | www.071956.com | www.45bk.com | www.814019.com | www.fj0.cc | www.cp613.com | 800502.com | 322589.com | www.24949.com | 7687.biz | www.365003.cc | www.37282.com | www.f29.com | www.917570.com | www.253577.com | www.27037.com | 792040.com | www.582326.com | www.5749.com | 985184.com | www.100314.com | 949554.com | www.556529.com | www.52562.com | www.162334.com | www.165901.com | 121481.com | www.679754.com | www.48444.cc | www.145369.com | www.979469.com | www.696335.com | www.517270.com | www.362505.com | www.455846.com | www.144446.com | www.219048.com | www.441813.com | www.281016.com | 2348.pw | www.191127.com | www.822280.com | www.17262.cc | 53448.com | www.813140.com | www.195217.com | www.88c35.com | www.29bc.com | www.96va.com | www.39555.com | www.020623.com | www.511066.com | www.779796.com | www.974771.com | www.771455.com | www.787149.com | 优点彩票www.137101.com | www.im33.com | www.91927.cc | www.ag72.com | www.686499.com | www.705232.com | www.019367.com | 632051.com | www.560715.com | www.19795.cc | 218201.com | www.080099.cc | www.441777.com | www.03495.com | 853663.com | www.871085.com | www.456338.com | www.76pb.com | 365125.cc | www.356330.com | www.023815.com | www.145618.com | www.787643.com | www.227654.com | www.1nm.cc | 967647.com | www.702247.com | www.24714.com | 77795.com--444409.com | www.846815.com | 60408.cc | 557864.com | 167234.com | 027226.com | 天下彩www.843879.com | www.10659.com | www.2525.biz | www.69798.cc | www.623419.com | www.54163.com | 397754.com | www.968888.com | www.231323.com | www.939090.com | 444003.com | www.304242.com | www.240133.com | www.351157.com | www.246865.com | www.127086.com | www.057435.com | www.255988.com | www.168880.cc | www.539325.com | www.852366.com | 500彩票www.602471.com | www.776662.cc | www.88640.com | www.55966.com | 499887.com | 983094.com | www.013841.com | 539469.com | www.191975.com | www.081390.com | www.160278.com | www.114127.com | www.229338.com | www.192967.com | www.028926.com | www.539106.com | www.24560.com | 341188.com | 402960.com | 568423.com | 60948.cc | www.ws8.com | www.550.tv | www.658663.com | 149026.com | 270534.com | 9916.pw | 514896.com | 聚福彩票www.50989i.com | www.404.hk | www.128354.com | www.015265.com | 54989.com | www.vp80.com | www.43fd.com | www.e08.net | 340549.com | www.ic59.com | www.od29.com | www.0476.loan | www.6065.vip | www.036.hk | www.75vh.com | www.4iy.com | www.as72.com | www.60kr.com | www.14fy.com | 365193.cc | 448335.com | 093028.com | 8号彩票www.60108d.com | www.6352.org | www.xx36.cc | www.8648.org | www.v04.net | www.6639.top | www.zl16.com | www.q05.cc | www.14pm.com | 500彩票www.50054u.com | www.tv71.com | 博通彩票www.606624.com | 677370.com | 529879.com | www.36924.com | www.756252.com | www.354742.com | www.369608.com | www.661805.com | www.gm90.com | www.7184.vip | www.83542.com | www.024384.com | www.924907.com | 大赢家彩票平台www.502990.com | 892541.com | www.569179.com | www.348003.com | www.807542.com | www.67ap.com | www.1337.cn | www.53307.com | www.6991.cm | www.088163.com | www.675310.com | www.796549.com | 654562.com | 430.hk--tm139.com | www.997909.com | www.884715.com | 253793.com | 爱彩www.235953.com | www.016217.com | www.268268.com | 891557.com | www.jf9.com | 252155.com | www.228208.com | www.630109.com | www.475507.com | www.502201.com | www.581335.com | www.824716.com | www.858352.com | www.144528.com | www.3313.cn | 139465.com | www.66583.com | www.362990.com | www.790661.com | www.716495.com | www.ni2.com | 954260.com | 127031.com | www.358438.com | www.233027.com | www.540606.com | www.193209.com | www.003637.com | www.75hb.com | www.7029.loan | www.70zh.com | www.113599.com | www.028038.com | www.306820.com | www.264614.com | www.339512.com | www.182087.com | www.840544.com | 659396.com | www.48uo.com | 500彩票www.602469.com | www.932073.com | www.uu62.com | www.203391.com | www.302296.com | www.912386.com | oe74.com | www.15691.cc | www.510775.com | www.098404.com | www.4221.in | www.yo57.com | www.806027.com | www.081615.com | 74788.com | 287986.com | 713081.com | www.995404.com | www.cp7933.com | www.jq04.com | www.55252.com | www.309549.com | www.243199.com | www.132073.com | www.455739.com | www.560980.com | www.703498.com | www.73055.com | www.759320.com | 博亿彩票www.622by.com | 全民快乐8www.qmkl3.com | 190712.com | www.349698.com | www.978353.com | 321880.com | 071881.com | www.eo42.com | 479209.com | 265458.com | 066751.com | 820013.com | www.fq97.com | www.4855.com | www.0612.website | www.167330.com | www.295232.com | www.059160.com | www.75358.com | www.117020.com | www.421688.com | www.982652.com | www.775476.com | www.988874.com | www.768337.com | www.443553.com | www.97he.com | www.30eg.com | 410755.com | www.318913.com | www.141238.com | www.ur72.com | www.699393.com | www.157549.com | www.69sm.cc | www.879208.com | 008439.com | www.284071.com | www.324494.com | www.97fa.com | www.68116.cc | www.663187.com | www.480642.com | www.319318.com | 863142.com | www.9101.vip | www.897506.com | www.791025.com | www.291392.cc | www.9998.cm | www.769433.com | www.692029.com | www.449043.com | www.364677.com | www.553921.com | www.453553.com | www.226152.com | www.164521.com | www.20rb.com | www.gn50.com | 863289.com | 582850.com | www.29lr.com | www.65li.com | www.10ao.com | www.jd51.com | www.154506.com | www.669780.com | www.982130.com | www.872068.com | www.911396.com | www.522353.com | 870440.com | 307735.com | 536502.com | www.72gl.com | www.445656.com | www.382070.com | www.608996.com | www.733639.com | www.271824.com | www.237483.com | www.956330.com | www.694568.com | www.679848.com | www.555047.com | www.379655.com | www.685086.com | www.845555.com | www.659869.com | www.298173.com | www.092351.com | 37156.com | www.x88.vip | www.883471.com | www.94ug.com | www.7vy.com | www.oz94.com | www.cp8098.com | www.7564.cn | www.288855.cc | www.276900.com | www.197408.com | www.74002.com | www.87815.com | www.052220.com | www.3308.cm | www.93268.cc | www.2304.net | www.00958.cc | www.kx22.com | www.134542.com | www.334888.com | www.061468.com | www.88257.cc | www.523672.com | www.562205.com | www.076798.com | www.901440.com | www.809371.com | www.691186.com | www.603158.com | 344972.com | www.06jo.com | www.45037.com | www.zc84.com | www.vt60.com | www.li03.com | www.562363.com | www.78991.cc | www.121728.com | www.645038.com | www.885508.com | 306677.cc | www.990994.com | www.973457.com | www.3596.win | 036212.com | www.014689.com | www.99474.com | www.39232.cc | 144104.com | www.688922.com | www.wl59.cc | 808297.com | www.20898.com | www.934301.com | www.790105.com | 043278.com | www.542233.com | 974204.com | 129452.com | www.870077.com | 088469.com | www.873451.com | www.928510.com | www.561810.com | 168487.com | www.89094.com | www.413953.com | www.6091.vip | www.941284.com | www.093463.com | www.791486.com | www.690502.com | www.410815.com | www.78781.com | www.295839.com | www.557328.com | www.wx67.com | 32031.com | 670493.com | 799478.com | 901589.com | www.yu87.com | 029278.com | 165889.com | www.924500.com | www.733323.com | www.874952.com | www.92mx.com | www.zl15.com | www.zp98.com | 500彩票www.652392.com | 312770.com | 802234.com | 957938.com | www.265417.com | www.202550.com | www.111288.com | www.726462.com | www.md38.com | www.hg44.cc | www.79re.com | 461553.com | 505327.com | 710551.com | www.762103.com | www.70297.com | www.99436.com | www.706709.com | www.7546.cm | www.06685.com | www.0134.top | www.2513.net | 818合彩www.www.5666hc.com | www.526510.com | 625067.com | www.998286.com | www.21pm.com | 917558.com | www.345166.com | www.qb43.com | www.871591.com | www.592636.com | www.802127.com | www.190933.com | www.418641.com | www.925238.com | 254235.com | 994905.com | www.368999.cc | www.444596.com | www.440825.com | www.653771.com | www.80di.com | www.ua69.com | 660734.com | 405061.com | 761403.com | www.89759.com | www.578668.com | www.970945.com | 155445.com | www.41595.com | www.739036.com | www.649451.com | www.930410.cc | 210519.com | www.1014.org | www.83074.com | www.58wb.com | www.f61.club | 4935.pw | www.cai578.com | 大赢家彩票平台www.635893.com | 984315.com | www.897352.com | www.558149.com | www.285677.com | www.261852.com | www.081762.com | www.42mj.com | www.4633.xyz | www.9184.cn | 991045.com | www.025841.com | 4769.biz | 406061.com | www.690251.com | 907133.com | www.766951.com | 021855.com | www.22dv.com | www.26214.com | www.96gx.com | www.414398.com | www.548847.com | 437996.com | 329924.com | 中国福利彩票www.34788n.com | 939804.com | www.f49.in | www.de19.com | www.fo58.com | www.52ae.cc | www.6819.net | www.53en.com | www.637881.com | www.009315.com | www.vz11.com | 961467.com | www.579048.com | www.582311.com | www.93wd.com | www.8925.cn | www.763736.com | www.834648.com | www.954965.com | www.2797.org | www.765553.com | www.u46.net | 791945.com | www.cp0307.com | 948951.com | 367937.cc | www.73588.com | www.3516.vip | 286471.com | www.073340.com | www.73379.cc | www.42874.com | www.4963.org | www.97018.com | www.262397.com | www.293137.com | www.av49.com | 双彩网www.178012.com | www.884123.com | www.340157.com | 595546.com | www.566781.com | www.v27.net | 618984.com | www.88414.cc | 125370.com | www.790987.com | www.133429.com | 470105.com | www.939729.com | www.691151.com | www.871091.com |