The data in the current version 2020-12-01 of the COL Checklist have been provided by the resources listed below. Most datasets include one or more sectors that feed into COL and cover all of the world’s species in a particular group of organisms. These result from collaboration and editing by many expert taxonomists, whose names are found in the information for each dataset.

A few datasets are listed as containing no species. These contribute to the higher classification for the Catalogue of Life.