phylogeny (n.) Look up phylogeny at Dictionary.com
"genesis and evolution of a phylum," 1869, from German Phylogenie, coined 1866 by German biologist Ernst Heinrich Haeckel (1834-1919) from Greek phylon "race" (from PIE root *bheue- "to be, exist, grow") + -geneia "origin," from -genes "born" (from PIE root *gene- "give birth, beget"). Related: Phylogenic.