Taxonavigation
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: Asaphida
Superfamilia: Dikelocephaloidea
Familia: Ptychaspididae
Genera: Alborsella - Changia - Eoptychaspis - Eowuhuia - Euptychaspis - Idiomesus - Kathleenella - Keithia - Keithiella - Macronoda - Plectrella - Proricephalus - Ptychaspis - Saukioides - Sunwaptia - Wilcoxaspis
Name
Ptychaspididae Raymond 1924
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