2017-04-08, I do8n2t think the number 8 has that much to do with the clades being of roughly equal age. If you recognize Norops as a genus, then the minimum number of mutually exclusive clades (regardless of age) on their molecular tree (Fig. 4) that must be ranked as genera to encompass all of the remaining species of anoles is 7. Convention dictates that genera must be mutually exclusive.
