Krajewski C, Driskell A C, Baverstock P R, Braun M J
Department of Zoology, Southern Illinois University, Carbondale.
Proc Biol Sci. 1992 Oct 22;250(1327):19-27. doi: 10.1098/rspb.1992.0125.
DNA sequences from the mitochondrial cytochrome b gene were obtained from a museum specimen of the presumed extinct thylacine (Thylacinus cynocephalus) and were compared with homologous sequences from 13 representatives of the Australian marsupial family Dasyuridae. The relationship of the thylacine to dasyurids has been suggested by previous anatomical and molecular studies, but its position within the dasyuroid radiation has not been addressed with genetic data. Phylogenetic analysis of the sequences reported here suggests that the thylacine is a sister group to Dasyuridae and lends support to the hypothesis that Thylacinus represents an ancient Australian marsupial lineage. Relationships with Dasyuridae support the results of other recent molecular studies, particularly in showing the affinities of endemic New Guinean subfamilies with larger Australian clades.
从一只被认为已灭绝的袋狼（袋狼属）博物馆标本中获取了线粒体细胞色素b基因的DNA序列，并将其与澳大利亚有袋类袋鼬科13个代表物种的同源序列进行了比较。先前的解剖学和分子研究表明了袋狼与袋鼬科动物之间的关系，但尚未通过基因数据确定其在袋鼬总科辐射中的位置。对本文所报道序列的系统发育分析表明，袋狼是袋鼬科的姐妹群，并支持袋狼代表古老的澳大利亚有袋类谱系这一假说。与袋鼬科的关系支持了其他近期分子研究的结果，特别是显示了新几内亚特有亚科与澳大利亚较大类群之间的亲缘关系。
