Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: †Trilobitomorpha
Classis: †Trilobita
Ordo: †Ptychopariida
Subordo: †Ptychopariina
Superfamilia: Ptychoparioidea
Familia: Isocolidae
Genera: Cyphoniscus - Effnaspis - Hanzhongaspis - Holdenia - Isocolus - Kielanella - Liangshanocephalus - Paratiresias - Pradesia - Pseudopetigurus - Taimyraspis - Thoralocolus - Triarthroides
Name
Isocolidae Angelin 1854
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