Phylogenetic (evolutionary) Tree
| • | showing the evolutionary relationships among various biological species or other entities that are believed to have a common ancestor. | |
| • | Each node is called a taxonomic unit. | |
| • | Internal nodes are generally called hypothetical taxonomic units | |
| • | In a phylogenetic tree, each node with descendants represents the most recent common ancestor of the descendants, and the | |
| • | edge lengths (if present) correspond to time estimates. |
