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

惠民彩票www.hm3999.com 28660.com | www.132498.com | www.538886.com | www.689060.com | www.855159.com | 596546.com | www.kq03.com | www.8618.date | www.064963.com | www.167839.com | www.969683.com | 560337.com | 819768.com | www.pe58.com | www.5092.cn | www.021848.com | www.271917.com | www.732552.com | www.974811.com | 241702.com | 502109.com | 大赢家彩票平台www.367562.com | www.uy00.com | www.95pn.com | www.020230.com | www.971283.com | 086864.com | 网易彩票www.558414.com | 彩757www.c757.vip | www.rh34.com | www.111395.com | www.274590.com | www.495446.com | 587025.com | www.8ph.com | www.7277.org | www.91501.com | www.097205.com | www.281931.com | www.484098.com | www.597402.com | www.862016.com | 468729.com | www.mp61.com | www.1139.net | www.82625.com | www.201430.com | www.539462.com | www.603319.com | www.547733.com | www.183782.com | www.445818.com | www.759822.com | www.49870.com | 19hm.com | 528434.com | 亿发彩票www.901576.com | www.cai220.cc | www.30ku.com | www.61jj.com | www.2565.me | www.60354.com | www.100832.com | www.160355.com | www.714258.com | www.987047.com | 385607.com | 788.gg | www.og73.com | www.31hh.cc | www.68uu.com | www.10762.com | www.486288.com | www.577739.com | www.669155.com | www.42688.cc | www.2140.tv | 606722.com | www.994843.com | www.790767.com | www.943911.com | www.277557.com | www.093027.com | www.a63.net | www.771767.com | www.095646.com | www.03456.cc | C9999www.318548.com | 740062.com | www.966906.com | www.581210.com | www.81628.cc | www.26790.com | 124218.com | www.2794.pw | www.48pb.com | www.515118.com | www.654485.com | www.900026.cc | 751470.com | 301280.com | 亚洲彩www.68568n.com | www.cl58.com | www.17mw.com | www.3837.pw | www.109104.com | www.278344.com | www.776417.com | www.976906.com | 416516.com | 274715.com | 911408.com | 3668彩票www.3668z.com | www.by73.com | www.6582.cn | www.230510.com | www.956946.com | 540039.com | www.105082.com | www.gp88.com | www.147.biz | www.29869.cc | www.66261.com | www.041750.com | www.680785.com | www.969633.com | www.973397.com | www.988246.com | 974814.com | 817810.com | 盈宝彩票www.ybao7.com | www.00oe.com | www.87gd.com | www.47604.com | www.294546.com | www.503838.com | www.692891.com | www.771272.com | 023027.com | www.of0.com | www.35vb.com | www.88yx.com | www.07108.com | www.54377.cc | www.446337.com | www.631989.com | www.932537.com | 006893.com | 940401.com | 074228.com | 639470.com | www.23767.com | www.007098.com | www.168385.com | www.548100.com | www.642855.com | www.984403.com | www.999608.cc | 447220.com | 786975.com | 937136.com | www.311512.com | 凤凰彩票www.452802.com | www.xi92.com | www.05vh.com | www.23ut.com | www.44ds.com | www.79fv.com | www.53271.cc | www.120681.com | www.526039.com | www.997479.com | 778113.com | 648214.com | 838979.com | 新盈彩www.xinyc8.com | www.cai7770.com | www.16899.com | www.511489.com | www.674894.com | www.747636.com | www.846216.com | 378831.com | 61hk.com | 019237.com | 973439.com | 591198.com | 大玩家彩票www.84499b.com | www.gv56.com | www.25vx.com | www.69tm.com | www.68yh.com | www.79cp.com | www.8213.xyz | www.24988.com | www.061528.com | www.122388.com | www.325063.com | www.535375.com | www.818161.com | www.864869.com | 370087.com | 548617.com | 663439.com | 中国福利彩票www.08588r.com | 500万彩票www.608587.com | www.3441.cm | www.039952.com | www.085841.com | www.101185.com | www.092121.com | www.114755.com | www.213661.com | www.285617.com | www.428979.com | www.632389.com | www.835338.com | www.873137.com | 9839.biz | 196623.com | 624447.com | 136573.com | 088670.com | 882226.com | www.vv24.com | www.sc34.com | www.c62.net | www.90987.com | www.144898.com | www.388455.com | www.490098.com | www.566044.com | www.570620.com | www.541852.com | www.545028.com | www.541844.com | www.565211.com | www.605054.com | www.609099.com | www.606816.com | www.65011.com | www.093320.com | www.146777.com | www.653673.com | www.866547.com | 070550.com | 478038.com | 079663.com | 837965.com | 112965.com--918.com | 大赢家彩票网www.178385.com | www.qs02.com | www.11jg.com | www.44lk.com | www.19ii.com | www.12py.com | www.x52.org | www.w37.club | www.yp97.com | www.x93.top | www.6fs.cc | 凤凰彩票www.77803m.com | 720054.com | 7767.me | 华为彩票www.hw8222.com | www.cp8688.com | www.jp02.com | www.vy71.com | www.09mo.com | www.q96.me | www.p57.xyz | www.vo13.com | www.4qw.com | www.e44.cc | www.yq15.com | www.za66.com | www.ld71.com | www.mv87.com | www.hr29.com | www.53989.com | www.273223.com | www.292530.com | www.289283.com | www.388672.com | www.837013.com | 99552.com | 026905.com | 579273.com | 251618.com | 035064.com | 810195.com | 7213.biz | 944345.com | 036623.com | 529249.com | 025751.com | xg64.com | 乐点彩票www.552358.com | www.dx31.com | www.rw58.com | www.cb08.com | www.19vf.com | www.g07.net | www.ub58.com | www.nz91.com | www.k10.com | www.l72.net | www.wl47.cc | www.227751.com | www.396370.com | www.816644.com | www.772239.com | www.789615.com | www.742919.com | www.684605.com | www.637522.com | www.835574.com | www.854469.com | www.815087.com | 301357.com | 660109.com | 981930.com | 061577.com | 620970.com | 914752.com | 314722.com | 253718.com | 654503.com | www.oj44.com | www.af0.cc | 彩71www.197802.com | 426656.com | ef21.com | 390705.com | 061044.com | www.ec87.com | www.og49.com | www.kh32.com | www.pj08.cc | www.of21.com | 500彩票网www.681770.com | 福利彩票www.8039h.com | pj45.cc | 683292.com | 791843.com | 417577.com | 13814.com | www.837440.com | 幸运彩票www.085366.com | 993622.com | fc58.cc | 637003.com | 908226.com | 265206.com | 846211.com | 950357.com | 783876.com | 657097.com | 632501.com | www.783749.com | www.js5.com | 大赢家彩票www.570981.com | 490896.com | 35234.cc | www.84464.com | www.303941.com | www.367281.com | www.430066.com | www.336250.com | www.274523.com | www.226121.com | www.150850.com | www.331066.com | www.292163.com | www.216156.com | www.08508.cc | www.78599.com | www.86982.cc | www.50094.cc | www.025997.com | www.83889.cc | www.34875.com | www.17541.com | www.6011.in | www.6668.pro | www.8158.red | www.1656.pw | www.6562.xyz | www.77yx.cc | www.24ya.com | www.vy75.com | www.qj2.com | www.hc27.com | www.yn21.com | www.dc32.com | www.260639.com | www.294066.com | www.556537.com | www.506738.com | www.384478.com | www.476340.com | www.366729.com | www.498279.com | www.375287.com | www.388069.com | www.326930.com | www.338158.com | www.622603.com | www.635501.com | www.659940.com | www.639114.com | www.686206.com | www.591840.com | www.822898.com | www.731307.com | www.639507.com | www.610938.com | www.390598.com | www.773681.com | 222806.com | 294136.com | 848530.com | www.985807.com | www.893993.com | 958748.com | 954812.com | 872485.com | 051477.com | 588733.com | kv66.cc | 638557.com | www.a75.cc | www.b65.top | www.ys57.cc | www.1835.in | www.1083.vip | www.5845.xyz | www.0516.org | www.6056.vip | www.2154.vip | www.50fu.com | www.16kb.com | www.58jt.com | www.20ar.com | www.y30.club | www.j99.xyz | www.1282.pw | www.084808.com | www.070170.com | www.629364.com | www.667176.com | www.565068.com | www.387172.com | www.636758.com | www.752908.com | www.675985.com | www.964614.com | www.831359.com | www.735932.com | www.620082.com | www.927077.com | www.786235.com | www.661883.com | www.670011.com | www.585161.com | www.522445.com | 387180.com | www.964842.com | www.809731.com | www.950673.com | www.796164.com | www.657964.com | www.661401.com | www.687737.com | 909742.com | 494949.com | 397545.com | 608561.com | 08hq.com | 922659.com | 357696.com | 500彩票www.346177.com | 962871.com | 火星彩票www.hx6693.com | www.gr46.com | www.a80.xyz | www.qm03.com | www.ki39.com | www.m07.cc | www.062742.com | www.021191.com | www.92625.cc | www.60950.com | www.78193.com | www.010606.com | www.77016.com | www.96278.cc | www.53129.cc | www.45604.com | www.068634.com | www.044433.com | www.81961.com | www.70862.com | www.020446.com | www.60083.cc | www.078841.com | www.133543.com | www.120672.com | www.022394.com | www.747550.com | 237497.com | 1139.pw | www.988012.com | www.839648.com | www.667597.com | www.973458.com | www.828567.com | www.710064.com | www.874242.com | 944707.com | 566285.com | www.977711.cc | 498896.com | 516508.com | www.970719.com | www.790148.com | www.jb23.com | www.718188.cc | www.49995.com | 金彩www.984jc.com | www.658484.com | 亚洲彩www.68568y.com | www.035452.com | www.549880.com | www.907020.com | 亚投彩票www.ya308.com | www.752992.com | www.042225.com | 117693.com | www.577863.com | www.87157.com | www.ij40.com | 556759.com | www.381459.com | www.0026.online | 586400.com | www.589558.com | www.3377.vip | www.995111.com | www.1468.vip | www.3000.org | www.9248.biz | www.73579.com | www.018751.com | www.059182.com | www.160023.com | www.477281.com | www.375526.com | www.598478.com | www.544525.com | www.458676.com | www.539939.com | www.510538.com | www.491406.com | www.182688.com | www.497123.com | www.15886.com | 309005.com--954455.com | www.959507.com | www.858691.com | 683585.com | www.973213.com | www.918217.com | www.870473.com | www.881459.com | www.863322.com | www.930625.com | www.922695.com | www.828712.com | www.750348.com | 786069.com | 148258.com | www.952750.com | www.850955.com | www.845422.com | www.826033.com | www.825638.com | www.798883.com | www.666732.com | www.566189.com | www.670099.com | www.591609.com | www.454534.com | www.266024.com | www.200293.com | www.066052.com | www.57325.cc | www.029328.com | www.202890.com | www.106063.com | www.255216.com | www.179792.com | www.219214.com | www.365659.cc | www.358813.com | www.391600.com | www.382508.com | www.634848.com | www.501378.com | www.388601.com | www.454559.com | www.342706.com | www.282556.com | www.165056.com | www.237526.com | www.488250.com | www.480045.com | www.338328.com | www.367733.com | www.419182.com | www.388066.com | www.313796.com | www.322045.com | www.221069.com | www.150011.cc | www.151202.com | 865147.com | www.983973.com | www.921666.cc | www.788156.com | www.692033.com | www.986732.com | www.867833.com | 367986.com | www.929882.com | www.875492.com | www.855337.com | www.839605.com | www.769957.com | www.654164.com | www.579464.com | www.459568.com | www.349039.com | www.159970.com | www.191105.com | www.586643.com | www.810590.com | www.992192.com | 586434.com | 962204.com | 971694.com | 753062.com | www.947926.com | www.805600.com | 411537.com | 369451.com | 377894.com | www.898048.com | www.745744.com | www.563714.com | www.427456.com | www.290540.com | www.135515.com | www.367018.com | www.376961.com | www.536797.com | www.324722.com | www.279108.com | www.282388.com | www.120368.com | www.013066.com | www.22626.cc | www.26163.com | www.0668.mobi | www.83ot.com | www.84jq.com | www.75pr.com | www.te28.cc | www.df54.com | 629036.com | 145012.com | www.989495.com | www.855063.com | www.955744.com | www.744191.cc | www.623007.com | www.750938.com | www.794368.com | www.952224.com | www.823555.com | www.692206.com | www.443354.com | www.382311.com | www.555383.com | www.416002.com | www.302441.com | www.144806.com | www.101255.com | www.288231.com | www.091110.com | www.27010.cc | www.13fn.com | E彩堂www.9818t.cc | 431636.com | 481535.com | www.970597.com | 550570.com | 908909.com | www.922294.com | 042769.com--513111.com | www.881308.com | www.865409.com | www.801266.com | 813191.com | 009216.com | 325064.com | www.947601.com | www.gi00.com | www.kw06.com | 金掌柜www.83993s.com | 089502.com | 756230.com | 639074.com | 289006.com | 590044.com | www.977467.com | www.797335.com | www.625850.com | www.621930.com | www.651265.com | www.727965.com | www.663814.com | www.618869.com | www.434094.com | www.276168.com | www.146598.com | www.128126.com | www.72597.com | www.329653.com | www.292119.com | www.133745.com | www.063922.com | www.017210.com | www.03943.com | www.1591.wang | www.0941.me | www.6934.org | www.48zg.com | www.g10.org | www.hq63.cc | www.26ho.com | www.kd7.com | 幸运彩票网www.33598m.com | 069977.com | 540930.com | 005761.com | www.941818.cc | www.869638.com | www.822661.com | www.682607.com | www.590267.com | www.507893.com | www.371871.com | www.447622.com | www.250008.com | www.583658.com | 812169.com | 79479.com | www.872842.com | www.868268.com | www.828011.com | www.655457.com | www.864864.com | www.737320.com | www.555249.com | www.388037.com | www.312153.com | www.034540.com | www.4411.online | www.5083.biz | www.jp55.com | 639293.com | 805893.com | www.876664.com | www.703703.cc | www.590662.com | www.314240.com | www.234171.com | www.158471.com | www.89228.cc | www.464615.com | www.363068.com | www.336484.com | www.081203.com | www.025940.com | www.5388.tv | www.h18.name | 970748.com | www.119272.com | www.9448.vip | www.pi48.com | www.bs82.com | 130732.com | www.901438.com | www.582550.com | www.535329.com | www.313085.com | www.669340.com | www.809231.com | www.595268.com | www.599365.com | www.375237.com | www.502988.com | www.654278.com | tmkjw.cc | www.835156.com | www.976704.com | www.798800.com | www.565086.com | www.321130.com | www.084003.com | www.208965.com | www.261657.com | www.71399.cc | www.385385.com | www.246049.com | www.86929.cc | www.4437.vip | www.up.com | 486068.com | www.975348.com | www.614155.com | www.684899.com | www.440878.com | www.238238.cc | www.66780.com | www.512.org | www.xk60.com | 362805.com | www.896123.com | www.539268.com | www.162534.com | www.53786.cc | www.53rs.com | 650932.com | 36ef.com | 众彩www.871660.com | 441194.com | www.781875.com | www.434752.com | www.681365.com | www.330809.com | www.052365.com | www.0163.pw | www.sh86.com | 大赢家彩票平台www.629913.com | 301393.com | www.817391.com | www.444559.com | www.133065.com | www.87602.com | www.82gt.com | www.107877.com | www.69642.com | www.32ii.com | www.63rl.com | PK彩票www.www.23040.com | cai3234.com | www.972115.com | www.713404.com | www.531180.com | www.330222.cc | www.106749.com | www.97068.com | www.07876.com | www.2338.cn | www.sq88.cc | 1104.vip | 388706.com | www.883430.com | www.699516.com | www.833333.cc | www.599188.com | www.591008.com | www.283729.com | www.050569.com | www.6909.cc | www.41jo.com | 657990.com | 750808.com | 036629.com | www.831182.cc | www.581596.com | www.892999.com | www.949808.com | www.678905.cc | www.397143.com | www.505022.com | www.314699.com | www.039023.com | www.7189.vip | www.514.xyz | www.wy66.com | 288107.com | 183765.com | www.976097.com | www.779715.com | www.879365.com | www.875783.com | bg03.com | 553665.com | www.862697.com | www.756332.com | www.567296.com | www.316119.com | www.121674.com | www.63219.com | www.78090.com | www.3141.in | www.7js.cc | 天玺彩票www.296380.com | www.qj15.com | 新盈彩www.xinyc5.com | 396644.com | www.980960.com | www.851985.com | 989823.com | 369853.com | www.874432.com | www.866217.com | www.761097.com | www.493047.com | www.387621.cc | www.979677.com | 363099.com | www.981822.com | www.759885.com | www.982934.com | www.748205.com | www.590116.com | www.573458.com | www.369420.com | www.283536.com | www.206264.com | www.89808.cc | www.q87.net | 大赢家彩票www.595411.com | 731011.com | www.947396.com | www.717895.com | www.502000.com | www.233665.com | www.062291.com | www.7988.me | www.54lo.com | 993254.com | 287333.com | www.954804.com | www.654067.com | www.819982.com | www.561501.com | www.495316.com | www.200088.com | www.86671.com | www.4756.net | www.a42.org | E彩堂www.43818q.com | 825100.com | 虹彩集团www.hcjt3.com | 801643.com | 554335.com | www.965668.com | www.161333.com | www.216197.com | www.123483.com | www.0892.date | www.cp172.com | www.975837.com | www.744447.com | www.346434.com | www.083911.com | www.56ih.com | 102103.com | www.550465.com | www.70252.com | www.30ig.com | 437678.com--50.cc | www.494996.com | www.79470.com | www.vh12.com | www.63608.com | www.009291.com | www.5536.com | www.pc53.com | www.ny25.com | 虹彩集团www.hcjt0.com | 10151.com | www.913463.com | www.649463.com | www.443352.com | www.158611.com |