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• SOS Overview
• Top 10 List - 2008
• News Release

SOS Report

The State of Observed Species (SOS) Report is issued annually in partnership with the International Commission on Zoological Nomenclature, the International Plant Names Index, and Thompson Scientific (the publisher of Zoological Record). The SOS is a report card on the status of our knowledge of earth’s species, summarizing the number of species newly described in the most recent year for which complete data are available. SOS 2008 (PDF Format) was released on May 23, 2008 and summarizes data for calendar year 2006. It reports the discovery of 16,969 new species.