Fig5A

Figure 5. Backbone topology used in the MEDUSA analyses. A) phylogeny backbone from analysis with 218 species and 9 calibration points. Tip names refer to the species groups (those polyphyletic were clustered into a single clade) and numbers in brackets refer to the species richness of the tip. Numbers on nodes indicate divergence times.图5. MEDUSA分析中使用的主干拓扑结构。A) 基于218个物种与9个校准点的分析得到的系统发育（phylogeny）主干。分支末端名称对应物种类群（其中多系群类群被聚类为单个演化支（clade）），括号内的数字代表该分支末端的物种丰富度，节点上的数字则代表物种分化时间。