Skip to main content

Table 2 Model comparisons for analyses relaxing the assumption of autocorrelation of rates across the tree. Harmonic mean model likelihoods were calculated from post-burnin MCMC samples generated in BEAST. For these model comparisons, the topology was fixed as T Consensus. The strict clock model serves as a base comparison. The tree T Flexible refers to analyses where topology is not fixed. Covariance indicates the degree of substitution rate autocorrelation between ancestor and descendent branches. 95% HPDs are given in parentheses.

From: Strong mitochondrial DNA support for a Cretaceous origin of modern avian lineages

Model

Model likelihood

Covariance

T Consensus

  

   CLOCK

-212231

N/A

   UCED

-210459

0.039 (-0.103, 0.175)

   UCLN

-207226

0.066 (-0.061, 0.193)

T Flexible

  

   UCLN

-206812

0.042 (-0.071, 0.161)