Genus
Micraster Agassiz, 1836
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Echinodermata | 
| Subphylum | Echinozoa | 
| Class | Echinoidea | 
| Order | Spatangoida | 
| Family | Micrasteridae | 
| Genus | Micraster | 
| Species | cortestudinarium | 
 See also 
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Echinodermata | 
| Subphylum | Echinozoa | 
| Class | Echinoidea | 
| Order | Spatangoida | 
| Family | Micrasteridae | 
| Genus | Micraster | 
| Species | cortestudinarium |