Glossary of "Molecular Systematics (2nd ed.)" by Hillis et al. (1996)
- bifurcation: A node in a tree that connects exactly three branches. If the tree is directed (rooted), then one of the branches represents an ancestral lineage and the other two branches represent descendent lineages. Synonym: dichotomy.
- Hillis, D. M., Moritz, C. & Mable, B. K. 1996. Molecular Systematics, 2nd ed. -xvi + 655 pp. Sinauer Associates, Inc., Sunderland.