Type species: Cellaria smithii Phillips, 1829
This genus includes the species:
Now considered as a subjective synonym of Arachnidium.
Simplicidium brandesi | (Voigt, 1968) | Cretaceous | Germany | WoRMS 1443871 |
Simplicidium jontoddi | Martha, Taylor & Rader, 2019 | Early Cretaceous Albian | USA Texas | WoRMS 1443872 |
Simplicidium smithii | (Phillips, 1829) | Jurassic | England | WoRMS 1443875 |
Reference: Todd, Jonathan A., Taylor, Paul D., & Favorskaya, Tatjana A., 1997. A bioimmured ctenostome bryozoan from the Early Cretaceous of the Crimea and the new genus Simplicidium. Geobios,30: 205-213.