Classic taxonomy has been joined by a new method: phylogeny. Phylogeny is the study of the evolutionary history of living organisms and how each organism is related to each other through common ancestry. Using phylogenetics, biologists may construct the biological tree of life.

Phylogenetics and the Biological Tree of Life

it is the study of evolutionary relationships among groups of organisms (e.g. species, populations), which are discovered through molecular sequencing data and morphological data matrices.