Heterostraci
![](http://upload.wikimedia.org/wikipedia/commons/thumb/0/01/Panamintaspis_snowi.jpg/220px-Panamintaspis_snowi.jpg)
Taxonavigation
editSuperregnum: 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
editHeterostraci Lankester, 1868