Taxonomy (biology) new common (or apomorphic) traits. However, certain phenetic methods, such as neighbor joining, have found their way into cladistics, as a reasonable approximation of phylogeny when more advanced methods (such as Bayesian inference) are too computationally expensive. Modern taxonomy uses database technologies to search and catalogue classifications and their documentation. While there is no commonly used database, there are comprehensive databases such as the "Catalogue of Life", which attempts to list every documented species. The catalogue listed 1.64 million species for all kingdoms as of April 2016, claiming coverage of more than three quarters of the estimated species known to
Linnaeus Link Project Linnaeus Link Project Linnaeus Link is an international collaboration between libraries with significant holdings of material by or relating to Carl Linnaeus (1707–1778), his students, and his legacy. The project's main aim is to provide a comprehensive online Union Catalogue of Linnaean publications, facilitating research for scholars worldwide by enabling them to identify locations of titles with a single online search and to conduct bibliographic research remotely. In taxonomic research it is still important to reference the works of Carl Linnaeus, as he was the first to classify and describe so many species of plants and animals. The Linnaeus Link