 Ereshefsky (2001) argues that a commitment to phylogenetic principles entails a reformation of the practice and norms around biological classification. Specifically, he recommends leaving behind the traditional Linnaean classification naming practices in favor of a phylogenetically informed practice. This follows a tradition stemming back to the very earliest phylogenetic literature that sought to reform biological classification around the principle of monophyly (e.g., Hennig 1966; Griffiths 1976; Wiley 1981). For many phylogeneticists this goal continues to this day—most recently around the development of the PhyloCode (see  Other Internet Resources;  de Queiroz &amp; Gauthier 1990, 1992, 1994; Cantino &amp; de Queiroz 2020). Though structural reforms to wholly replace Linnaean taxonomy have struggled to gain wide-scale traction and adoption, taxonomists have largely adopted monophyly as a guiding principle in classification and systematics—even in the context of so-called traditional taxonomy (though microbial systematics has proven more resistant; see  §3.1).