Results
Phylogenetic signal
In phylogenetic signal detection, magnitude and significance of phylogenetic signal detection for morphological attributes varied across two datasets. Both λ and K indexes for all morphological attributes were below one, some of which were approaching to zero (LSD: λear< 0.001, p> 0.999; λhindfoot-rat< 0.001, p> 0.999. RED: λear-rat< 0.001, p> 0.999) (Table S2). In general, phylogenetic signals in regional dataset (RED) were more significant than that in local dataset (LSD) (Table S2).