Phylogenesis

Part of speech: noun

Definitions

1. The evolutionary process that traces the development of a group of organisms over time encompasses the progression and diversification that leads to a specific lineage
2. This refers to the historical development and evolutionary changes that result in a distinct taxonomic group within the biological hierarchy
3. The process by which an organism or a group of organisms evolves through generations resulting in the formation of a distinct line or species

Etymology: Ernst Haeckel, the German zoologist and passionate advocate of Charles Darwin's ideas, coined "Phylogenese" in 1866 in his work on the general morphology of organisms. He needed a term for the history of a lineage as opposed to the development of a single individual, and he built it from classical Greek parts: "phylon," meaning tribe or race, and "genesis," meaning origin or birth. The result was a label for the evolutionary descent of a group of organisms through generations. English borrowed the term directly from German, so it carries Haeckel's scientific framing intact. The word is a deliberate scientific coinage rather than something inherited from ancient Greek, a point worth keeping in mind because its Greek elements might suggest otherwise. Haeckel's concept of tracing ancestry through time gave biologists a way to speak about relationships between species as a historical sequence.