Home›Class›Living or Extinct›YesBrowse ByYesLiving or extinct separates a taxon's surviving members from those known only from fossils. Wikipedia notes "the 41 officially recognized extant Felidae species" live today, while the "saber-toothed cats" of the extinct subfamily Machairodontinae, including the famous saber-toothed tiger, do not. This dimension lets a visitor tell a still-living branch of a family tree from an extinct one.FactsYesSourcesComments (0)Reader Challenges (0)FactsComparisonTaxonomic Rank OrderWell-attested4 1YesFilter 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)Show ResultsBrowseCompareSelect all 47HalobacteriaYesHexactinellidaYesHolothuroideaYesHydrozoaYesInsectaYesKinetofragminophoraYesLiliopsidaYesLycopodiopsidaYesMachaeridiaYesMagnoliopsidaYesMalacostracaYesMammaliaYesMarchantiopsidaYesMerostomataYesMethanobacteriaYesMethanococciYesMonoplacophoraYesMyxiniYesOligochaetaYesOphiuroideaYesOstracodaYesPauropodaYesPhaeophyceaeYesPhylactolaemataYesPinopsidaYesPolychaetaYesPolyplacophoraYesPolypodiopsidaYesPterobranchiaYesPucciniomycetesYesPycnogonidaYesReptiliaYesSaccharomycetesYesSarcopterygiiYesScaphopodaYesScyphozoaYesSipunculaYesSordariomycetesYesSpirochaetiaYesStenolaemataYesSymphylaYesThaliaceaYesThermococciYesThermoproteiYesTrematodaYesTurbellariaYesUstilaginomycetesYesShowing 51 to 97 of 97, page 2 of 2.← Previous12Sources1. 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.