Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Annelida
Classis: Polychaeta
Subclassis: Echiura
Ordo: Heteromyota
Familia: Urechidae
Genus: Urechis
Species (4): U. caupo – U. chilensis – U. novaezealandiae – U. unicinctus
[source: WoRMS]
Name
Urechis Seitz, 1907
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