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Mammal Species of the World, 3rd edition (MSW3) is a database of mammalian taxonomy. It is hoped that this database on the World Wide Web can be used as a convenient on-line reference for identifying or verifying recognized scientific names and for taxonomic research. The names are organized in a hierarchy that includes Order, Suborder, Family, Subfamily, Genus, Species and Subspecies. Records include the following fields:

  • Scientific name
  • Author's name and year described
  • Original publication citation
  • Common name
  • Type Species
  • Type Locality
  • Distribution
  • Comments
  • Status
  • Synonyms

The citation for this work is: Don E. Wilson & DeeAnn M. Reeder (editors). 2005. Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed), Johns Hopkins University Press, 2,142 pp. (Available from Johns Hopkins University Press, 1-800-537-5487 or (410) 516-6900, or at

This third edition is enhanced by the identification of subspecies, and by the inclusion of authority information for all synonyms. Further information about the book and about the contents of each field can be found in the preface and introductory material.

This online list was compiled under the auspices of the American Society of Mammalogists. Copyright 2005 Johns Hopkins University Press. All rights are reserved. The data in this checklist of mammal species of the world are being presented for non-commercial, personal, and collections management use only. Copying or redistributing these data in any manner for personal or corporate gain is not permitted.  A list of the authors responsible for various portions of the text can be found here.

For an analysis of new species found in the third edition see: D. M. Reeder , K. M. Helgen, and D. E. Wilson. 2007. Global Trends and Biases in New Mammal Species Discoveries. Occasional Papers, Museum of Texas Tech University, 269:1-36. pdf [ click here].

This project is in collaboration with the Division of Mammals of the Department of Vertebrate Zoology at the National Museum of Natural History, Smithsonian Institution and The American Society of Mammalogists.

The scientific names from the MSW3 database are available as a custom dictionary that can be used with various Microsoft Office applications. To download the dictionary, right-click on this link and choose 'Save Target As ...' (or the equivalent, depending on the browser that you are using). [Installation instructions for custom dictionaries vary depending on the version of Microsoft Office that you are using. To start, try here.] Thanks to Doug Kelt, UC Davis, for creating and sharing this dictionary.

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