<P> In his landmark publications , such as the Systema Naturae , Carl Linnaeus used a ranking scale limited to : kingdom , class , order , genus , species , and one rank below species . Today , nomenclature is regulated by the nomenclature codes . There are seven main taxonomic ranks : kingdom , phylum or division , class , order , family , genus , species . In addition , the domain ( proposed by Carl Woese ) is now widely used as one of the fundamental ranks , although it is not mentioned in any of the nomenclature codes . Also , this term represents a synonym for the category of dominion ( lat . dominium ) , introduced by Moore in 1974 . Unlike Moore , Whoese et al. ( 1990 ) did not suggest a Latin term for this category , which represents a further argument supporting the accurately introduced term dominion . </P>
<P> In his landmark publications , such as the Systema Naturae , Carl Linnaeus used a ranking scale limited to : kingdom , class , order , genus , species , and one rank below species . Today , nomenclature is regulated by the nomenclature codes . There are seven main taxonomic ranks : kingdom , phylum or division , class , order , family , genus , species . In addition , the domain ( proposed by Carl Woese ) is now widely used as one of the fundamental ranks , although it is not mentioned in any of the nomenclature codes . Also , this term represents a synonym for the category of dominion ( lat . dominium ) , introduced by Moore in 1974 . Unlike Moore , Whoese et al. ( 1990 ) did not suggest a Latin term for this category , which represents a further argument supporting the accurately introduced term dominion . </P>
taxonomic rank that includes species but not families
taxonomic rank that includes species but not families
genus
genus