所属栏目:英汉古生物学专业术语
Definition: A crown group is a group consisting of living representatives,and theirancestors,back to the most recent common ancestor of that group.冠群guān qún一个共同祖先及其所有后裔组成的单系群,即冠部类群。形成于一次分支发生事件,其识别依据是共同衍征。 ......(本文共 184 字 ) [阅读本文] >>