One goal of biological taxonomy is to achieve a stable circumscription for every taxon.
Achieving stability is not yet a certainty in most taxa, and many that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecular phylogenetics.
In essence, new discoveries may invalidate the application of irrelevant attributes used in established or obsolete circumscriptions, or present new attributes useful in cladistic taxonomy.
- Glossary of scientific naming
- Circumscription (logic)
- Circumscriptional name
- Circumscribed circle
- Venn diagram
Credits to the contents of this page go to the authors of the corresponding Wikipedia page: en.wikipedia.org/wiki/Circumscription (taxonomy).