Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
phylogenetically is an adverb meaning "with regard to phylogeny". It carries one recorded sense.
with regard to phylogeny
“a phylogenetically primitive part of the brain”
Definitions, synonyms and semantic relations for phylogenetically come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.