Biological Classification

Kingdom
            Subkingdom
            Phylum (Zool.) or Division (Bot.)
                Subphylum (Zool.) or Subdivision (Bot.)
                Superclass
                Class
                    Subclass
                    Infraclass
                    Order
                        Suborder
                        Superfamily
                        Family
                            Subfamily
                            Tribe
                            Genus
                                Species
                                Subspecies


    All species fall into categories of the ranks indicated by bold type. The other ranks may be omitted in smaller or less complex groups, or additional ranks may be inserted (e.g. superorder, infraorder, etc.). Names of groups ranked above genus are not printed in italics.
    The name of a species consists of a binomial printed in italics, the genus name with a capital letter followed by the specific name or epithet. Additional names or symbols may indicate e.g. subspecies (Corvus corone cornix, hooded crow), hybrids (Platanus × hispanica, London plane), or varieties (Capsicum annuum var. longum, chilli pepper). Cultivated plants may bear only their genus and cultivar names (Rosa 'Queen Elizabeth').
    Classification frequently changes to reflect current scientific understanding of relationships between species, and many species and groups have more than one name in recent use.

Examples:
human: kingdom Animalia, phylum Chordata, subphylum Vertebrata, class Mammalia, subclass Theria, infraclass Eutheria, order Primates, suborder Anthropoidea, family Hominidae, genus Homo, species Homo sapiens

seven-spot ladybird: kingdom Animalia, phylum Arthropoda, subphylum Uniramia, class Insecta, subclass Pterygota, order Coleoptera, suborder Polyphaga, superfamily Cucujoidea, family Coccinellidae, genus Coccinella, species Coccinella septempunctata

apple: kingdom Plantae, subkingdom Tracheophyta, division Spermatophyta, subdivision Angiospermae, class Dicotyledonae, family Rosaceae, subfamily Maloideae, genus Malus, species Malus domestica

field mushroom: kingdom Fungi, division Eumycota, subdivision Basidiomycotina, class Hymenomycetes, order Agaricales, family Agaricaceae, tribe Agariceae, genus Agaricus, species Agaricus campestris

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