Kingdom Animalia Class †Hyolitha Order Orthothecida | Informal group Lophophorata Rank Genus | |
Family †Orthothecidae
Sysoev, 1958 Similar Hyolitha, Selkirkia, Ogygopsis, Bathyuriscus, Halkieriid | ||
Orthotheca is a genus of sessile bottom-dwelling hyolith.
References
Orthotheca Wikipedia(Text) CC BY-SA