Home›Species›Taxonomy›NematodaTaxaNematodaPhylumReference and ClassificationThoroughly VerifiedThe roundworms: slender, unsegmented worms with a tough outer cuticle and a body cavity, among the most numerous animals on Earth by individual count even though relatively few species have been formally described. Nematoda includes free-living soil and marine species alongside major agricultural and medical parasites.FactsNematodaConnectionsIn the Other AtlasesSourcesComments (0)Reader Challenges (0)FactsDisputedMember Species/Taxa CountScholarly debate25,000 2Approximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized.Taxonomic RankWell-attestedPhylum / Division 2Scientific NameWell-attestedNematoda 2ClassificationLiving or ExtinctWell-attestedYes 1NematodaFilter Results7 entriesCommon GroupAllRoundworms (Nematoda) (7)HabitatAllBoreal Forest (1)Chaparral (2)Desert (2)Lake (2)River (2)Tropical Rainforest (2)Tundra (1)Conservation StatusAllNot Evaluated (6)Everyday GroupAllRoundworms (Nematoda) (7)DietAllCarnivore (1)Detritivore or Scavenger (1)Parasitic (5)System (Realm)AllFreshwater (3)Terrestrial (4)Relationship to PeopleAllDisease Vector (5)Ecotourism and Research (1)Living or ExtinctAllYes (1)Where It LivesAllArgentina (1)Brazil (2)Bulgaria (1)Canada (1)Central Africa (1)Central America (1)China (4)Denmark (3)Egypt (1)Italy (1)Netherlands (1)New Zealand (1)Norway (4)Poland (1)Portugal (2)South America (1)South Korea (1)Spain (1)Suriname (1)Sweden (3)Taiwan (1)Thailand (1)Ukraine (1)United States (1)West Africa (1)Show ResultsBrowseCompareSelect all 7Ascaris LumbricoidesNematodaCaenorhabditis ElegansNematodaCapillaria aerophilaNematodaLoa LoaNematodaToxocara canisNematodaTrichinella SpiralisNematodaWuchereria BancroftiNematodaConnectionsChild Taxon OfAnimalia, Taxa Well-attested Source Catalogue of LifeParent Taxon OfAscaris Lumbricoides, Species Well-attested Source Wikidata: Ascaris LumbricoidesCaenorhabditis Elegans, Species Well-attested Source Wikidata: Caenorhabditis ElegansCapillaria aerophila, Species Well-attested Source Wikidata: Capillaria aerophilaLoa Loa, Species Well-attested Source Wikidata: Loa LoaToxocara canis, Species Well-attested Source Wikidata: Toxocara canisTrichinella Spiralis, Species Well-attested Source Wikidata: Trichinella SpiralisWuchereria Bancrofti, Species Well-attested Source Wikidata: Wuchereria BancroftiIn the Other AtlasesFound InSouth AfricaAlso in Geography Atlas: where this subject is found.Sources1. Wikidata (taxon extant/extinct status)tier 2Wikimedia Foundation / Wikidata contributorsQ5185, descriptionView the Source2. Catalogue of LifeSpecies 2000 & ITIS Catalogue of LifeView the SourceWikidata: NematodaWikidata Q5185, class allow-list match (w-wdresolver-0926)View the SourceWikidata: Caenorhabditis ElegansParent Taxon Of: Caenorhabditis Elegans, Wikidata parent-taxon (P171) chainView the SourceWikidata: Loa LoaParent Taxon Of: Loa Loa, Wikidata parent-taxon (P171) chainView the SourceWikidata: Trichinella SpiralisParent Taxon Of: Trichinella Spiralis, Wikidata parent-taxon (P171) chainView the SourceWikidata: Wuchereria BancroftiParent Taxon Of: Wuchereria Bancrofti, Wikidata parent-taxon (P171) chainView the SourceWikidata: Ascaris LumbricoidesParent Taxon Of: Ascaris Lumbricoides, Wikidata parent-taxon (P171) chainView the SourceWikidata: Toxocara canisParent Taxon Of: Toxocara canis, Wikidata parent-taxon (P171) chainView the SourceWikidata: Capillaria aerophilaParent Taxon Of: Capillaria aerophila, Wikidata parent-taxon (P171) chainView the SourceWikipedia: NematodeIn Group: Major Animal Phyla, LeadQuote, In Group: Major Animal Phyla, LeadThe nematodes ( NEM-ə-tohdz, NEE-mə-), roundworms or eelworms constitute the phylum Nematoda (Ancient Greek: Νηματώδη; Latin: Nematoda).View 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.