The Linnaean hierarchy is a system of nested classes whose members are individual organisms. It will be the purpose of this paper to set out the logic of this system in a manner which is faithful to ...

Last summer on a warm Paris morning, a few dozen members of the International Society for Phylogenetic Nomenclature gathered at the National Museum of Natural History. The occasion was a talk by Jason ...

Linnaeus believed that a fixed number of species were specially created (he did allow the limited formation of new species through cross-breeding), and that genera and species have real essences — ...