26 genera are assigned to the class CEPHALASPIDOMORPHI
| Order | Genus | FOP | FOS | LOP | LOS |
|---|
| ANASPIDA | Conopiscius | C | l | C | l |
| ANASPIDA | Jamoytius | S | Ldov-u | D | Gedi-l |
| ATELASPIDIFORMES | Atelaspis | S | Wenl | S | Wenl |
| ATELASPIDIFORMES | Hemicyclaspis | S | Ludl-l | S | Prid |
| ATELASPIDIFORMES | Witaaspis | S | Wenl | S | Wenl |
| BIRKENIIFORMES | Birkenia | S | Prid | S | Prid |
| BIRKENIIFORMES | Lasanius | S | Wenl | S | Wenl |
| CEPHALASPIDOFORMES | Aachenaspis | S | Prid | S | Prid |
| CEPHALASPIDOFORMES | Darmuthia | S | Ludl-l | S | Ludl-l |
| CEPHALASPIDOFORMES | Didymaspis | S | Prid | D | Gedi |
| CEPHALASPIDOFORMES | Fieldingaspis | D | Gedi-l | D | Gedi-l |
| CEPHALASPIDOFORMES | Ilemoraspis | D | Give | D | Give |
| CEPHALASPIDOFORMES | incertae sedis | O | Cara-l | O | Cara-l |
| CEPHALASPIDOFORMES | Oeselaspis | S | Wenl-u | S | Ludl-l |
| CEPHALASPIDOFORMES | Procephalaspis | S | Ludl | S | Ludl |
| CEPHALASPIDOFORMES | Saaremaaspis | S | Wenl-u | S | Wenl-u |
| CEPHALASPIDOFORMES | Sclerodus | S | Wenl-u | S | Prid |
| CEPHALASPIDOFORMES | Tannuaspis | D | Gedi | D | Gedi |
| CEPHALASPIDOFORMES | Thyestes | S | Prid | S | Prid |
| CEPHALASPIDOFORMES | Timanaspis | S | Prid | S | Prid |
| CEPHALASPIDOFORMES | Tremataspis | S | Wenl-u | S | Prid |
| CEPHALASPIDOFORMES | Tuvaspis | S | Prid | S | Prid |
| CEPHALASPIDOFORMES | Tyriaspis | S | Prid | S | Prid |
| MYXINIFORMES | Myxinikela | C | Mosc-u | C | Mosc-u |
| PETROMYZONIFORMES | Hardistiella | C | Serp-l | C | Serp-l |
| PETROMYZONIFORMES | Mayomyzon | C | Mosc-u | C | Mosc-u |
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FOP = Period of first occurrence
FOS = Stage of first occurrence
LOP = Period of last occurrence
LOS = Stage of last occurrence
Stage abbreviations follow Sepkoski (2002).