Comparisons of every 10^th replicate showing differences in the prior distribution, number of calibrated nodes, and relaxed clock simulations.

Average (Avg.) minimum (Min), maximum (Max), median, and credible interval (CI) values are the averaged absolute summed differences between primary and secondary estimates in time units (Ma). The uniform and normal prior distribution replicates and relaxed clock simulations applied a single calibration, whereas the two node replicates applied two calibrations per replicate, both of which have a uniform prior distribution. The T-test results are the proportion of replicates that resulted in a significant value at P < 0.05.最小值（Min）、最大值（Max）、中位数与可信区间（credible interval, CI）的均值，为以时间单位（百万年，Ma）计量的一级估计值与二级估计值之间的绝对求和差值的平均值。采用均匀先验分布与正态先验分布的重复实验，以及松弛钟模型（relaxed clock）模拟，均仅施加单个校准点；而双节点重复实验则每个重复设置两个校准点，且两个校准点均采用均匀先验分布。T检验结果为重复实验中P值小于0.05的显著性结果所占的比例。