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首页> 外文期刊>Acta Palaeontologica Polonica >Quail-thrush birds from the Miocene of northern Australia
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Quail-thrush birds from the Miocene of northern Australia

机译：来自澳大利亚北部的北方的鹌鹑鸟

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摘要

Quail-thrushes (Passeriformes: Cinclosomatidae: Cinclosoma) are ground-dwelling corvoid songbirds endemic to Australia and New Guinea. Until now, the only known quail-thrush fossils have been from late Quaternary cave deposits in Australia. A new species of quail-thrush, Cinclosoma elachum sp. nov., is described from the early to middle Miocene deposits in the Riversleigh World Heritage Area, Queensland, Australia. A second, larger quail-thrush is identified from the middle Miocene of Riversleigh. The new fossils considerably extend the geographic and temporal ranges of cinclosomatids, and indicate the presence of two species of quail-thrushes in the Miocene of northern Australia, located more than 300 km from the nearest extant member of Cinclosoma. These fossils provide a minimum age of similar to 18 million years for Cinclosomatidae. They cannot be confidently assigned to the crown group of the genus Cinclosoma, but can be used to calibrate the split between this genus and Ptilorrhoa in molecular dating studies of the Corvides radiation and Passeriformes overall. This material also adds to the growing diversity of songbirds identified from the pre-Pleistocene record of Australia, and reemphasises the global significance of the Riversleigh deposits in developing understanding about the early evolutionary history of passerines.
机译：鹌鹑（passeriformes：cinclosomatidae：cinclosoma）是澳大利亚和新几内亚的地面核心鸣禽。到目前为止，唯一已知的鹌鹑鹅毛石化石已经来自澳大利亚的后期四元洞穴沉积物。一种新的鹌鹑鹅口疮，Cinclosoma elachum sp。 11月。，从澳大利亚昆士兰王国世界遗产地区的早期到中间内海茂矿床中描述。第二个，较大的鹌鹑鹅口疮是从Riversleigh的中间内海茂鉴定的。新的化石大大扩大了南殖民体的地理和时间范围，并表明澳大利亚北部内科群中的两种鹌鹑眉毛，距离最近的患有Cinclosoma的最近成员300公里以上。这些化石的最低年龄与脑病菌的1800万年相似。它们不能自信地分配到白霉素属的皇冠组，但可用于校准该属和Ptilorrhoa之间的分裂在整体羽毛辐射和passeriformes的分子约会研究中。该材料还增加了从澳大利亚前先生记录中确定的鸣禽的日益增长的多样性，并重新审视了riversleighs沉积在对关于普罗兰早期进化历史的理解方面的全球意义。

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