Home›Subcategories›ClassSubcategoriesClass97 of 1,475 entries in Taxa. Click any to see everything it connects to.Citation FormatsGeneral ReferenceGeneral Reference Citation TextNature Atlas. "Class." Accessed September 8, 2026. https://nature.interactiveatlas.org/subcategories/taxon/class.Copy General ReferenceAPA StyleAPA Style Citation TextNature Atlas. (n.d.). Class. Retrieved September 8, 2026, from https://nature.interactiveatlas.org/subcategories/taxon/classCopy APA StyleBibTeXBibTeX Citation Text@misc{natureatlas-class, author = {Nature Atlas}, title = {Class}, year = {2026}, url = {https://nature.interactiveatlas.org/subcategories/taxon/class}, note = {Accessed September 8, 2026} }Copy BibTeXThe 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.Comments (0)Reader Challenges (0 open reader challenges)BrowseCompareSelect all 97ActinomycetesClass1 linkActinopterygiiClass5 linksAgaricomycetesClass1 linkAgnathaClass1 linkAlphaproteobacteriaClass1 linkAmphibiaClass5 linksAnthocerotopsidaClass1 linkAnthozoaClass2 linksAppendiculariaClass1 linkArachnidaClass2 linksArchaeoglobiClass1 linkAscidiaceaClass1 linkAsteroideaClass2 linksAvesClass18 linksBacillariophyceaeClass1 linkBacilliClass1 linkBetaproteobacteriaClass1 linkBivalviaClass2 linksBranchiopodaClass1 linkBryopsidaClass1 linkCalcareaClass1 linkCephalopodaClass2 linksCestodaClass1 linkCharophyceaeClass1 linkChilopodaClass2 linksChlorophyceaeClass1 linkChondrichthyesClass2 linksChytridiomycetesClass1 linkClitellataClass1 linkClostridiaClass1 linkCopepodaClass1 linkCrinoideaClass2 linksCubozoaClass1 linkCycadopsidaClass1 linkCyclostomataClass2 linksDeinococciClass1 linkDemospongiaeClass1 linkDinophyceaeClass1 linkDiplopodaClass2 linksDothideomycetesClass1 linkEchinoideaClass2 linksEnteropneustaClass1 linkEurotiomycetesClass1 linkFlavobacteriiaClass1 linkFlorideophyceaeClass1 linkGammaproteobacteriaClass1 linkGastropodaClass2 linksGinkgoopsidaClass1 linkGnetopsidaClass1 linkGymnolaemataClass1 linkHalobacteriaClass1 linkHexactinellidaClass1 linkHolothuroideaClass2 linksHydrozoaClass2 linksInsectaClass12 linksKinetofragminophoraClass1 linkLiliopsidaClass2 linksLycopodiopsidaClass1 linkMachaeridiaClass1 linkMagnoliopsidaClass2 linksMalacostracaClass2 linksMammaliaClass18 linksMarchantiopsidaClass1 linkMerostomataClass1 linkMethanobacteriaClass1 linkMethanococciClass1 linkMonoplacophoraClass1 linkMyxiniClass1 linkOligochaetaClass1 linkOphiuroideaClass2 linksOstracodaClass1 linkPauropodaClass1 linkPhaeophyceaeClass1 linkPhylactolaemataClass1 linkPinopsidaClass1 linkPolychaetaClass1 linkPolyplacophoraClass2 linksPolypodiopsidaClass1 linkPterobranchiaClass1 linkPucciniomycetesClass1 linkPycnogonidaClass1 linkReptiliaClass6 linksSaccharomycetesClass1 linkSarcopterygiiClass1 linkScaphopodaClass1 linkScyphozoaClass2 linksSipunculaClass1 linkSordariomycetesClass1 linkSpirochaetiaClass1 linkStenolaemataClass1 linkSymphylaClass1 linkThaliaceaClass1 linkThermococciClass1 linkThermoproteiClass1 linkTrematodaClass1 linkTurbellariaClass1 linkUstilaginomycetesClass1 linkComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0 open reader challenges)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.View At A Past YearThe atlas records no dated fact of its own for this entry, so there is no other year to choose.Show This Year