Kingdom Animalia Class Polychaeta | Phylum Annelida Rank Family | |
Similar Scolecodont, Eunicida, Phyllodocida, Conodont | ||
Ramphoprionidae are a family of polychaete worms known from the Ordovician and Silurian periods (and more?)
References
Ramphoprionidae Wikipedia(Text) CC BY-SA