Title: phylum
Long Title: IUPAC Gold Book - phylum
DOI: 10.1351/goldbook.14915
Status: current

Definition
Taxonomic rank at the level below Kingdom and above Class

Note
Formally, a phylum can be used for any biological domain, but traditionally it was always used for animals, whereas "division" was traditionally often used for plants, fungi, etc.

Source
- PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 927 (https://doi.org/10.1351/PAC-REC-08-07-09)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/14915/html
- json: https://goldbook.iupac.org/terms/view/14915/json
- xml: https://goldbook.iupac.org/terms/view/14915/xml

Citation: Citation: 'phylum' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14915
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Accessed: 2026-05-30T17:41:37+00:00