• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen >A giant darter (Pelecaniformes: Anhingidae) from the Upper Miocene of Argentina and weight calculation of fossil Anhingidae
【24h】

A giant darter (Pelecaniformes: Anhingidae) from the Upper Miocene of Argentina and weight calculation of fossil Anhingidae

机译：来自阿根廷上中新世的巨型飞镖（Pelecaniformes：Anhingidae）和化石Anhingidae的重量计算

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Darters are fresh-water birds presently distributed in tropical regions all over the world. Fossil darters were only known from North America, Europe, and Africa, but description in the last decade of various genera and paleospecies revealed an unsuspected diversity of large-bodied taxa of Anhingidae in the Tertiary of South America. We report the finding of the largest specimen of Anhingidae known to date, for which we estimate a mass of 17.7 kg. Specific assignment is precluded both on morphological and stratigraphical grounds. We tentatively assign this form to the genus cf. Giganhinga. The non-monophyletic "Miocene radiation of giant darters" is set in perspective, showing the existence of both dwarf and giant forms. The femur in birds is usually little influenced by locomotion and feeding adaptations, which makes it the best hindlimb element to predict body-weight. Due to the existence of flightless forms, we recommend caution when estimating mass from fore-limbs in the fossil anhingas.
机译：飞镖是淡水鸟，目前分布在世界各地的热带地区。化石飞镖仅在北美，欧洲和非洲才知道，但在过去十年中对各种属和古物种的描述显示，南美第三纪的大兴安科的大类群毫无疑问地具有多样性。我们报告发现了迄今为止已知的最大的Anhingidae标本，据我们估计，该标本的质量为17.7 kg。出于形态和地层的原因，均不能进行具体分配。我们暂时将此表格分配给cf类。 Giganhinga。非单峰的“大型飞镖的中新世辐射”是透视图，显示了矮星和巨星形式的存在。鸟类的股骨通常不受运动和喂养适应的影响，这使其成为预测体重的最佳后肢元素。由于存在飞行形式，因此在估算化石美洲虎中前肢的质量时，建议谨慎行事。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号