Cheiruroidea
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/47/Trilobite_Ordovicien_8127.jpg/250px-Trilobite_Ordovicien_8127.jpg)
Taxonavigation
editSuperregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: †Artiopoda
Superclassis: †Trilobitomorpha
Classis: †Trilobita
Ordo: †Phacopida
Subordo: †Cheirurina
Superfamilia: Cheiruroidea
Familiae: Cheiruridae - Encrinuridae - Pilekiidae - Pliomeridae