Description: This phylogenetic list of described extant species of the world is called SPECIES ACCOUNTS because its purpose is to list and count the number of species in each group known to be related to each other through evolution.
evolution (991) species (182) taxonomy (113) viruses (105) phylogeny (31) systematics (22) archaea (14) prokaryotes (4) viroids (2) eubacteria (1)
This website aims to list and count the known extant species of the world grouped by how they are related to one another through evolution. The Species Accounts website is a work in progress. Currently, about 11.0% of described extant species are listed and the remainder have their place held as described below in the Introduction. Contact us for more information.
Compiled by: Stephen Gene Sullivan, Ph.D., M.D.
Contributors: Christine Metlen, B.F.A. ( Amphibia , Anura , Squamata , Sauria , Serpentes )