- Plant DNA C-values Database
- Fungal Genome Size Database
- Prokaryote Genome Size Database
- Genomes OnLine Database (GOLD)
- National Center for Biotechnology Information (NCBI)
- European Molecular Biology Laboratory (EMBL)
- DNA Data Bank of Japan (DDBJ)
- CBS Genome Atlas Database
- TIGR Comprehensive Microbial Resource
- Genome News Network
- DOE Joint Genome Institute
- DOEGenomes
- The Sanger Institute
- The Wellcome Trust -- Human Genome Page
- The Broad Institute
- Genome Canada
- The Institute for Genomic Research (TIGR)
- Barcodes of Life Database (BOLD)
- FishBase
- AviBase
- Mammal Species of the World
- Amphibian Species of the World
- AmphibiaWeb
- EMBL Reptile Database
- Tree of Life Project
- Integrated Taxonomic Information Service (ITIS)
- T. Ryan Gregory's curriculum vitae
- The Gregory Lab, University of Guelph