Glossary of "Evolution (4th ed.)" by Futuyma & Kirkpatrick (2017)
- A set of similar ecological niches occupied by a group of (usually) related species, often constituting a higher taxon.
- Futuyma, D. J. & Kirkpatrick, M. 2017. Evolution, 4th ed. -xviii + 602 pp. Sinauer Associates, Inc., Sunderland.