Norwoodiidae

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Superphylum: Ecdysozoa
Phylum: Arthropoda
Subphylum: †Trilobitomorpha
Classis: Trilobita
Ordo: Ptychopariida
Subordo: Ptychopariina
Superfamilia: Ptychoparioidea
Familia: Norwoodiidae
Genera: Cedaraspis - Garbiella - Hardyoides - Holcacephalus - Levisaspis - Norwoodella - Norwoodia - Paranorwoodia - Xenocheilos

Name

Norwoodiidae Walcott 1916