Statistics generated from three coalescent processes.^*

*BSPs were estimated through the three processes and shown in Figure 4. BF = 11.371, when the exponential model compared with the Lognormal model; BF = 72.79, when the Lognormal model compared with the strict clock model. ¶Using the rate 2.737×10−3 (1.792×10−3∼3.745×10−3)±1.51×10−5 as a prior, and the resulting MCC tree was shown in Figure 2. ‡Using the rate 2.062×10−3 (1.479×10−3∼2.869×10−3)±9.94×10−6 as a prior, and the MCC tree was shown in Figure S3. †Directly estimated from the 285 sequences, and the MCC tree was shown in Figure S4.