In scientific classification used in biology, the order is a taxonomic rank between class and family. The superorder is a rank between class and order. Exact details of formal nomenclature depend on the Nomenclature Code which applies. The Latin suffix -(i)formes meaning "having the form of" is used for the scientific name of most orders, except for those of mammals and invertebrates. The classifications of taxonomy are life, domain, kingdom, phylum, class, order, family, genus, and species.