Phylogenetic analyses of mitochondrial DNA suggest a sister group relationship between Xenarthra (Edentata) and ferungulates

被引:68
作者
Arnason, U
Gullberg, A
Janke, A
机构
[1] Div. of Evol. Molecular Systematics, University of Lund
[2] Department of Genetics, Div. of Evol. Molecular Systematics, University of Lund, S-223 62 Lund
关键词
armadillo; complete mitochondrial DNAs; DNA sequence trees; mammalian phylogeny; divergence dates;
D O I
10.1093/oxfordjournals.molbev.a025816
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Phylogenetic analysis of 12 protein-coding genes from complete mitochondrial DNA (mtDNA) molecules of various mammals including a xenarthran representative, the armadillo (Dasypus novemcinctus), showed that the order Xenarthra (Edentata) is a sister group to the ferungulates (carnivores, perissodactyls, artiodactyls, cetaceans). Morphological and previous molecular analyses have placed the Xenarthra basal to other extant eutherians. The present findings are in striking contrast with that understanding. The results suggest that Xenarthra and ferungulates separated about 86 MYA.
引用
收藏
页码:762 / 768
页数:7
相关论文
共 55 条