The 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.
Facts
Taxonomic Rank Scientific Name Member Count Band Era First Appeared Disputed
Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Classification
Living or Extinct Connections
Child Taxon Of
Parent Taxon Of
Source Wikidata: Ascaris Lumbricoides
Source Wikidata: Caenorhabditis Elegans
Source Wikidata: Capillaria aerophila
Source Wikidata: Toxocara canis
Source Wikidata: Trichinella Spiralis
Source Wikidata: Wuchereria Bancrofti
In the Other Atlases
Found In
Also in Geography Atlas: where this subject is found.
Sources
1. Wikidata (taxon extant/extinct status)
Wikimedia Foundation / Wikidata contributorsQ5185, descriptionView the Source 2. Catalogue of Life
3. Catalogue of Life (ChecklistBank): Taxon metrics for Nematoda
Catalogue of Life (ChecklistBank)Taxon metrics, speciesExtantCountQuote, Taxon metrics, speciesExtantCount
"speciesExtantCount": 19667
View the Source 4. Paleobiology Database: Taxon record for Nematoda
Paleobiology DatabaseTaxon record, first appearance (firstapp_max_ma, early_interval)Quote, Taxon record, first appearance (firstapp_max_ma, early_interval)
"taxon_name": "Nematoda" ... "firstapp_max_ma": 413.02 ... "early_interval": "Pragian"
View the Source Wikidata: Nematoda
Wikidata: Caenorhabditis Elegans
Parent Taxon Of: Caenorhabditis Elegans, Wikidata parent-taxon (P171) chainView the Source Wikidata: Loa Loa
Parent Taxon Of: Loa Loa, Wikidata parent-taxon (P171) chainView the Source Wikidata: Trichinella Spiralis
Parent Taxon Of: Trichinella Spiralis, Wikidata parent-taxon (P171) chainView the Source Wikidata: Wuchereria Bancrofti
Parent Taxon Of: Wuchereria Bancrofti, Wikidata parent-taxon (P171) chainView the Source Wikidata: Ascaris Lumbricoides
Parent Taxon Of: Ascaris Lumbricoides, Wikidata parent-taxon (P171) chainView the Source Wikidata: Toxocara canis
Parent Taxon Of: Toxocara canis, Wikidata parent-taxon (P171) chainView the Source Wikidata: Capillaria aerophila
Parent Taxon Of: Capillaria aerophila, Wikidata parent-taxon (P171) chainView the Source Wikipedia: Nematode
In Group: Major Animal Phyla, LeadQuote, In Group: Major Animal Phyla, Lead
The nematodes ( NEM-ə-tohdz, NEE-mə-), roundworms or eelworms constitute the phylum Nematoda (Ancient Greek: Νηματώδη; Latin: Nematoda).
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