The below phylogenetic tree diagram introduction shows how the sampled tree starts from the ancestors and goes all to the present-day species.
With EdrawMax Online, you can create similar phylogenetic tree diagrams for your usage. The free phylogenetic tree maker offers tons of customization and has a good remote team collaboration. As the below-sampled diagram suggests, the pattern in which the branches connect represents our understanding of how the species in the tree evolved from a series of common ancestors. Each branch point (also called an internal node) represents a divergence event or splitting apart of a single group into two descendant groups.