Phylogenetic trees are fractal in the sense that the same ... whereas external branches connect a tip and a node. A clade is a piece of a phylogeny that includes an ancestral lineage and all ...

Of course, as phylogenetic trees branch, different lineages accumulate different traits. Figure 3 illustrates this idea using a clade that contains four lizard species. You can see that the ...

The oldest known lizard has reclaimed its crown clade ... in the form of a phylogenetic analysis. This involves figuring out where a species belongs in the evolutionary tree, based on the traits ...