| Rank | Scientific name | Taxonomic status |
|---|---|---|
| order | Petromyzontiformes | accepted |
| family | Ateleaspididae | accepted |
| family | Axinaspididae | accepted |
| family | Benneviaspididae | accepted |
| family | Birkeniidae | accepted |
| family | Boreaspididae | accepted |
| family | Cephalaspididae | accepted |
| family | Dartmuthiidae | accepted |
| family | Dayongaspididae | accepted |
| family | Didymaspididae | accepted |
| family | Endeiolepididae | accepted |
| family | Escuminaspididae | accepted |
| family | Eugaleaspididae | accepted |
| family | Euphaneropidae | accepted |
| family | Hanyangaspididae | accepted |
| family | Huananaspididae | accepted |
| family | Jamoytiidae | accepted |
| family | Kiaeraspididae | accepted |
| family | Lasaniidae | accepted |
| family | Nanpanaspididae | accepted |
| Show more | ||
Cephalaspidomorphi. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2019-11-15.