International Commission on Zoological Nomenclature
 INTERNATIONAL CODE OF ZOOLOGICAL NOMENCLATURE online

Contents

Title pages

Explanatory Note on the Code

Preface to the Fourth Edition

show sections

Introduction

Preamble

show Chapter 1 sections

Chapter 1: Zoological nomenclature

show Chapter 2 sections

Chapter 2: The number of words in the scientific names of animals

show Chapter 3 sections

Chapter 3: Criteria of publication

show Chapter 4 sections

Chapter 4: Criteria of availability

show Chapter 5 sections

Chapter 5: Date of publication

show Chapter 6 sections

Chapter 6: Validity of names and nomenclatural acts

show Chapter 7 sections

Chapter 7: Formation and treatment of names

show Chapter 8 sections

Chapter 8: Family-group nominal taxa and their names

show Chapter 9 sections

Chapter 9: Genus-group nominal taxa and their names

show Chapter 10 sections

Chapter 10: Species-group nominal taxa and their names

show Chapter 11 sections

Chapter 11: Authorship

Chapter 12: Homonymy

  

Article 52. Principle of homonymy

  

  

52.1. Statement of the Principle of Homonymy

  

  

52.2. Operation of the Principle of Homonymy

  

  

52.3. Principle of Priority applies

  

  

52.4. Replacement of junior homonyms

  

  

52.5. Suppression of senior homonyms

  

  

52.6. Incorrect and corrected original spellings

  

  

52.7. Homonymy with names of taxa which are not animals

  

Article 53. Definitions of homonymy in the family group, genus group and species group.

  

  

53.1. Homonyms in the family group.

  

  

53.2. Homonyms in the genus group.

  

  

53.3. Homonyms in the species group.

  

Article 54. Names that do not enter into homonymy

  

Article 55. Family-group names

  

  

55.1. Application of the Principle of Homonymy

  

  

55.2. Homonymy from identical generic names

  

  

55.3. Homonymy from similar generic names

  

  

55.4. One-letter difference

  

  

55.5. Precedence of names at higher rank

  

Article 56. Genus-group names

  

  

56.1. Application of the Principle of Homonymy

  

  

56.2. One-letter difference

  

  

56.3. Precedence of genus over subgenus

  

Article 57. Species-group names

  

  

57.1. Application of the Principle of Homonymy to names of species and subspecies

  

  

57.2. Primary homonyms

  

  

57.3. Secondary homonyms

  

  

57.4. Subgeneric name irrelevant

  

  

57.5. Difference in spelling of generic names

  

  

57.6. One-letter difference

  

  

57.7. Precedence of names of species over those of subspecies

  

  

57.8. Exceptions

  

Article 58. Variant spellings of species-group names deemed to be identical

  

Article 59. Validity of secondary homonyms

  

  

59.1. Taxa considered congeneric

  

  

59.2. Secondary homonyms not replaced when no longer considered congeneric

  

  

59.3. Secondary homonyms replaced before 1961 but no longer considered congeneric

  

  

59.4. Reinstatement of junior secondary homonyms rejected after 1960

  

Article 60. Replacement of junior homonyms

  

  

60.1. Substitute names

  

  

60.2. Junior homonyms with synonyms

  

  

60.3. Junior homonyms without synonyms

show Chapter 13 sections

Chapter 13: The type concept in nomenclature

show Chapter 14 sections

Chapter 14: Types in the family group

show Chapter 15 sections

Chapter 15: Types in the genus group

show Chapter 16 sections

Chapter 16: Types in the species group

show Chapter 17 sections

Chapter 17: The International Commission on Zoological Nomenclature

show Chapter 18 sections

Chapter 18: Regulations governing this code

Glossary

Summary

Appendices

Appendix A: Code of Ethics

Appendix B: General Recommendations

Constitution of the ICZN

Index

top