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首页> 外文期刊>Journal of Systematic Palaeontology >New schizophorid fossils from China and possible evolutionary scenarios for Jurassic archostematan beetles
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New schizophorid fossils from China and possible evolutionary scenarios for Jurassic archostematan beetles

机译：中国新的裂殖动物化石及其侏罗世弧寄主甲虫的可能进化场景

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摘要

The new genus Abrohadeocoleodes gen. nov. with four new species, A. eurycladus sp. nov., A. ooideus sp. nov., A. nii sp. nov. and A. patefactus sp. nov., and a new species, Menopraesagus oryziformis sp. nov., assigned to the extinct family Schizophoridae (Archostemata) are described from the Middle Jurassic Jiulongshan Formation of eastern Inner Mongolia, China. Nearly 20 extinct schizophorid genera have been discovered throughout the world. These fossil records are of some significance in piecing together the evolution of the suborders Adephaga and Archostemata. Members of the new genus Abrohadeocoleodes appear to have a prognathous head with fairly large mandibles, a narrow linear space between the antennal fossa, large metatrochanter, and long and thin legs, as in some terrestrial Adephaga. They might have been able to run fast and hunt small prey over the open ground of lakeshores similarly to the earliest adephagan beetles. Furthermore, Abrohadeocoleodes exhibits a mixture of characters of both Archostemata and Adephaga, suggesting that it may share synapomorphies with Mesozoic adephagan beetles. In addition, the length ratio of the last to the penultimate abdominal ventrites in Schizophoridae shows an increasing trend from the Early Triassic to the Late Jurassic, suggesting that the species with a lower length ratio might have lived in more ancient times.
机译：拟南芥属的新属。十一月带有四个新种，A。eurycladus sp.。十一月，A. ooideus sp。十一月，A。nii sp。十一月和A.patefactus sp。十一月，以及一个新种，米诺亚种。 11月，属于绝种的裂足科（Archostemata），描述于中国内蒙古东部的中侏罗统九龙山组。全世界已发现近20种灭绝的裂殖壶菌属。这些化石记录对于将亚德斐加（Adephaga）和Archostemata子亚类的演化整合在一起具有重要意义。与某些陆地上的Adephaga一样，新的Abrohadeocoleodes属的成员似乎具有一个很大的下颌骨的gna突的头部，触角窝之间的狭窄线性空间，大的粗转子以及长而细的腿。他们可能能够像最早的无足pha的甲虫一样，快速奔跑并在湖岸空旷地上猎杀小型猎物。此外，拟南芥显示出Archostemata和Adephaga的性状的混合体，表明它可能与中生的杂食性甲虫共有同形亚型。此外，裂殖蝇科中最后一个倒数第二个腹腹虫的长度比显示出从早三叠世到侏罗纪晚期的增加趋势，这表明长度比较小的物种可能生活在更古老的时代。

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  • 来源
    《Journal of Systematic Palaeontology》 |2013年第2期|47-62|共16页
  • 作者

    Jingjing Tan; Dong Ren; Chungkun Shih; Xingke Yang;

  • 作者单位

    Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Box 92, No. 1, Beichen West Road, Chaoyang District, Beijing, 100101, China;

    College of Life Sciences, Capital Normal University, Beijing 100048, China;

    College of Life Sciences, Capital Normal University, Beijing 100048, China;

    Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Box 92, No. 1, Beichen West Road, Chaoyang District, Beijing, 100101, China;

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  • 正文语种 eng
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  • 关键词

    Schizophoridae; new genus; new species; Jurassic; Jiulongshan Formation, China;

    机译：裂虫科新属新物种;侏罗纪中国九龙山组;

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