A biologii dialt a fasker (pisces) uun tau "räen" faan diarten iin:
Graselfasker (Chondrichthyes)
† (Acanthodii)
Bianfasker (Osteichthyes)
Lunwäärlisdiarten (Tetrapoda)
† (Placodermi)
Ei tu a fasker hiar a "Tjaapluasen" (Cyclostomata) of (Agnatha):
A biologii dialt a fasker (pisces) uun tau "räen" faan diarten iin:
Bianfasker (Osteichthyes) Graselfasker (Chondrichthyes)