期刊论文详细信息
BMC Evolutionary Biology
A North American stem turaco, and the complex biogeographic history of modern birds
Allison Y. Hsiang1  Daniel J. Field2 
[1] Department of Geology and Geophysics, Yale University, New Haven, USA;Milner Centre for Evolution, Department of Biology and Biochemistry, University of Bath, Bath, UK
关键词: Biogeography;    Palaeontology;    Turaco;    Musophagidae;    Phylogeny;    Fossils;    Gondwana;    Dispersal;    Otidimorphae;    Macroevolution;   
DOI  :  10.1186/s12862-018-1212-3
学科分类:生物科学(综合)
来源: BioMed Central
PDF
【 摘 要 】

Earth’s lower latitudes boast the majority of extant avian species-level and higher-order diversity, with many deeply diverging clades restricted to vestiges of Gondwana. However, palaeontological analyses reveal that many avian crown clades with restricted extant distributions had stem group relatives in very different parts of the world. Our phylogenetic analyses support the enigmatic fossil bird Foro panarium Olson 1992 from the early Eocene (Wasatchian) of Wyoming as a stem turaco (Neornithes: Pan-Musophagidae), a clade that is presently endemic to sub-Saharan Africa. Our analyses offer the first well-supported evidence for a stem musophagid (and therefore a useful fossil calibration for avian molecular divergence analyses), and reveal surprising new information on the early morphology and biogeography of this clade. Total-clade Musophagidae is identified as a potential participant in dispersal via the recently proposed ‘North American Gateway’ during the Palaeogene, and new biogeographic analyses illustrate the importance of the fossil record in revealing the complex historical biogeography of crown birds across geological timescales. In the Palaeogene, total-clade Musophagidae was distributed well outside the range of crown Musophagidae in the present day. This observation is consistent with similar biogeographic observations for numerous other modern bird clades, illustrating shortcomings of historical biogeographic analyses that do not incorporate information from the avian fossil record.

【 授权许可】

CC BY   

【 预 览 】
附件列表
Files Size Format View
RO201910251625467ZK.pdf 2518KB PDF download
  文献评价指标  
  下载次数:10次 浏览次数:6次