Fig. 3From: Ancient DNA of northern China Hystricidae sub-fossils reveals the evolutionary history of old world porcupines in the Late PleistoceneMolecular relationships of different species in the Hystricidae family shown by the 204 bp cyt b dataset and morphological characteristics of representative species. a Maximum Likelihood phylogenetic tree of Hystricidae. Tianyuan Cave samples are indicated by red triangles and bootstrap values are next to respective nodes. Only branches with bootstrap support greater than 40% are shown. b Representative species of three genera in Hystricidae [8, 9]Back to article page