Stephen Gene Sullivan in New York, NY is the creator of the Species Accounts website, which aims to provide a comprehensive list and count of known extant species of the world, organized by their evolutionary relationships. With contributions from experts in various taxonomic groups, the website is a work in progress, currently listing approximately 11.0% of described extant species.
Using a liberal definition of species, the website focuses on grouping and counting species based on their closest evolutionary relatives, rather than formal classification. Only extant and described species are included, with the understanding that the actual number of species may be significantly higher. The website follows a phylogenetic approach, presenting species in relation to their closest relatives, while acknowledging the limitations of our knowledge of evolutionary relationships.
Generated from the website