Class
Psammocorallia Seilacher, 1992
Selection of related publications
Savazzi, E. 2012. A reassessment of the Lower Cambrian psammocoral Spatangopsis costata.  Paleontological Research   16,   2,   159-170. DOI:10.2517/1342-8144-16.2.159
Seilacher, A., Goldring, R. 1996. Class Psammocorallia (Coelenterata, Vendian‐Ordovician): Recognition, systematics, and distribution.  GFF   118,   4,   207-216. DOI:10.1080/11035899609546256
Jensen, S. 1991. The Lower Cambrian problematicum Spatangopsis costata Torell, 1870.  GFF   113,   1,   86-87. DOI:10.1080/11035899109453833
Schmidt, Fr. 1888. Über eine neuentdeckte untercambrische Fauna in Estland.  Mémoires de l´Académie Impériale des Sciences de St.-Petersbourg   36,   2,   1-28.
List of species
1. Protolyellia princeps Torell, 1870 | Dominopol Stage
2. Spatangopsis alata Seilacher,  1996  | Lower Cambrian (old nomenclature)
3. Spatangopsis costata Torell, 1870 | Lükati Formation
 Loading... 
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Cnidaria | 
| Subphylum | Anthozoa | 
| Medusozoa | |
| Class | Hydrozoa | 
| Psammocorallia | |
| Genus | Protolyellia | 
| Spatangopsis | |
| Class | Scyphozoa | 
| Order | Melanoskleritoitidea | 
| Genus | Aspidella | 
| Byronia | |
| Semenola |