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Ventastega curonica and the origin of tetrapod morphology

机译:Ventastega curonica和四足动物的形态起源

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摘要

The gap in our understanding of the evolutionary transition from fish to tetrapod is beginning to close thanks to the discovery of new intermediate forms such as Tiktaalik roseae. Here we narrow it further by presenting the skull, exceptionally preserved braincase, shoulder girdle and partial pelvis of Ventastega curonica from the Late Devonian of Latvia, a transitional intermediate form between the 'elpistostegids' Panderichthys and Tiktaalik and the Devonian tetrapods (limbed vertebrates) Acanthostega and Ichthyostega. Ventastega is the most primitive Devonian tetrapod represented by extensive remains, and casts light on a part of the phytogeny otherwise only represented by fragmentary taxa: it illuminates the origin of principal tetrapod structures and the extent of morphological diversity among the transitional forms.
机译:由于发现了新的中间形式,如提克塔利克玫瑰科,我们对从鱼类到四足动物的进化过渡的理解的差距开始缩小。在这里,我们通过呈现拉脱维亚晚期泥盆纪的Ventastega curonica的颅骨,保存完好的脑壳,肩and带和部分骨盆,进一步缩小范围,这是“ elististegids” Panderichthys和Tiktaalik与泥盆纪四足动物(有肢脊椎动物)Acanthostega之间的过渡中间形式和鱼鳞。文塔加(Ventastega)是最原始的泥盆纪四足动物,由大量残骸代表,并向植物学的一部分投射光线,否则仅由零碎的分类单元代表:它阐明了主要四足动物结构的起源以及过渡形式之间形态多样性的程度。

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  • 来源
    《Nature》 |2008年第7198期|1199-1204qt0003|共7页
  • 作者单位

    Subdepartment of Evolutionary Organismal Biology, Department of Physiology and Developmental Biology, Uppsala University, Norbyvagen 18A, 752 36 Uppsala, Sweden;

    University Museum of Zoology, Cambridge, Downing Street, Cambridge CB2 3EJ, UK;

    Department of Geology, University of Latvia, Rainis Blvd 19, Riga LV-1586, Latvia;

    Subdepartment of Evolutionary Organismal Biology, Department of Physiology and Developmental Biology, Uppsala University, Norbyvagen 18A, 752 36 Uppsala, Sweden;

    Naturat History Museum of Latvia, K. Barona Str. 4, Riga LV-1712, Latvia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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