Phylogeny

n. descent or evolutionary development of a species

In biology, phylogenetics (Greek: phyle = tribe, race and genetikos = relative to birth, from genesis = birth) is the study of evolutionary relatedness among various groups of organisms (e.g., species, populations). Also known as phylogenetic systematics, phylogenetics treats a species as a group of lineage-connected individuals over time. Taxonomy, the classification of organisms according to similarity, has been richly informed by phylogenetics but remains methodologically and logically distinct.
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Noun
1. (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms
(synonym) evolution, phylogenesis
(hypernym) organic process, biological process
(hyponym) anamorphosis, anamorphism
(classification) biology, biological science
(class) Scopes trial

(n.)
The history of genealogical development; the race history of an animal or vegetable type; the historic exolution of the phylon or tribe, in distinction from ontogeny, or the development of the individual organism, and from biogenesis, or life development generally.
  

Phylogeny [from Greek phylo race + geneia producing] The racial history of an organism, as contrasted with ontogeny or the individual history. Phylogenesis is applicable to the process. This branch of biology takes into account the racial affinities of an organism, and forms an important part of the science of evolution.