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
Linnaean taxonomy Linnaean taxonomy Linnaean taxonomy can mean either of two related concepts: Linnaean name also has two meanings: depending on the context, it may either refer to a formal name given by Linnaeus (personally), such as "Giraffa camelopardalis" Linnaeus, 1758, or a formal name in the accepted nomenclature (as opposed to a modernistic clade name). In his "Imperium Naturae", Linnaeus established three kingdoms, namely "Regnum Animale", "Regnum Vegetabile" and "Regnum Lapideum". This approach, the Animal, Vegetable and Mineral Kingdoms, survives today in the popular mind, notably in the form of the parlour game question: "Is it animal, vegetable or mineral?". The