Kingdom Animalia Rank Family Subclass Holocephali | Phylum Chordata Order Symmoriida | |
 | ||
Similar Symmoriida, Stethacanthidae, Symmorium, Cobelodus, Akmonistion | ||
Symmoriidae is an extinct family of ratfish from the Carboniferous period.
References
Symmoriidae Wikipedia(Text) CC BY-SA