Home›Class›All ClassBrowse ByAll ClassReference and ClassificationVerifiedThe rank below phylum or division, refining a lineage's shared body plan further: Mammalia's warm blooded, milk producing animals, Aves's feathered egg layers, Insecta's six legged arthropods. Each class here groups every order that shares its class's defining physical and reproductive traits.FactsAll ClassSourcesComments (0)Reader Challenges (0)FactsComparisonTaxonomic Rank OrderWell-attested4 1All ClassFilter Results97 entriesTaxonomic RankAllClass (96)Infraphylum (1)Parent Taxon (Taxonomy Tree)AllArthropoda (5)Chordata (7)Cnidaria (3)Echinodermata (5)Magnoliophyta (2)Mollusca (4)Common GroupAllAlgal Classes (6)Annelid Classes (4)Archaeal Classes (6)Arthropod Classes (12)Bacterial Classes (9)Bryozoan Classes (3)Cnidarian Classes (4)Echinoderm Classes (5)Fern and Clubmoss Classes (2)Flatworm Classes (3)Flowering Plant Classes (2)Fungus Classes (8)Gymnosperm Classes (4)Hemichordate and Tunicate Classes (4)Mollusc Classes (6)Moss, Liverwort and Hornwort Classes (3)Sponge Classes (3)Vertebrate Classes (10)Everyday GroupAllAlgal Classes (6)Annelid Classes (4)Archaeal Classes (6)Arthropod Classes (12)Bacterial Classes (9)Bryozoan Classes (3)Cnidarian Classes (4)Echinoderm Classes (5)Fern and Clubmoss Classes (2)Flatworm Classes (3)Flowering Plant Classes (2)Fungus Classes (8)Gymnosperm Classes (4)Hemichordate and Tunicate Classes (4)Mollusc Classes (6)Moss, Liverwort and Hornwort Classes (3)Sponge Classes (3)Vertebrate Classes (10)Geographic DistributionAllAfrica (3)Antarctica (1)Asia (3)Australia (1)Australia (4)China (1)Europe (3)Japan (1)New Zealand (3)North America (3)South Africa (2)South America (3)The Antarctic (2)The Arctic (1)The Arctic Ocean (1)The Atlantic Ocean (1)The Caribbean (1)The Indian Ocean (1)The Mediterranean (2)The Pacific Ocean (1)The Southern Ocean (1)United States (1)Living or ExtinctAllYes (97)Show ResultsBrowseCompareSelect all 50ActinomycetesClassActinopterygiiClassAgaricomycetesClassAgnathaClassAlphaproteobacteriaClassAmphibiaClassAnthocerotopsidaClassAnthozoaClassAppendiculariaClassArachnidaClassArchaeoglobiClassAscidiaceaClassAsteroideaClassAvesClassBacillariophyceaeClassBacilliClassBetaproteobacteriaClassBivalviaClassBranchiopodaClassBryopsidaClassCalcareaClassCephalopodaClassCestodaClassCharophyceaeClassChilopodaClassChlorophyceaeClassChondrichthyesClassChytridiomycetesClassClitellataClassClostridiaClassCopepodaClassCrinoideaClassCubozoaClassCycadopsidaClassCyclostomataClassDeinococciClassDemospongiaeClassDinophyceaeClassDiplopodaClassDothideomycetesClassEchinoideaClassEnteropneustaClassEurotiomycetesClassFlavobacteriiaClassFlorideophyceaeClassGammaproteobacteriaClassGastropodaClassGinkgoopsidaClassGnetopsidaClassGymnolaemataClass12Next →Sources1. Wikipedia: Taxonomic ranktier 2WikipediaTaxonomic rank, Fundamental ranks section, rank sequence sentence, classQuote, Taxonomic rank, Fundamental ranks section, rank sequence sentence, classkingdom, phylum or division, class, order, family, genus, and speciesView the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.