Resolution:
## Figure 2.
Alternative tree topologies. T_{Consensus }(left) represents a conservative consensus estimate of avian familial relationships
[53] (AIC_{c }= 421460.9166). T_{Optimal }(right) is our optimal topology derived from a partitioned model maximum likelihood
search in RAxML (AIC_{c }= 414160.2536). Some topological constraints were implemented in this search (see
additional file 1). Solid circles and numbers indicate the placement of calibration points (see Table
5 for ages). Letters denote nodes whose age estimates are provided in Table 3.
Brown |