Heterostraci
edit
Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Superclassis/Classis: †Pteraspidomorphi
Subclassis: †Heterostraci
Ordines:
†Corvaspidiformes –
†Cyathaspidiformes –
†Eriptychiiformes –
†Pteraspidiformes –
†Psammosteiformes –
†Tesseraspidiformes –
†Traquairaspidiformes
Name edit
Heterostraci Lankester, 1868