Species
Chaetetes hemisphaericus (Eichwald, 1829)
Current taxon already exists. See initial taxon Mesotrypa bystrowi
Synonymy list
1829     Orbitulites hemisphaericus n. — Eichwald , pp. 179, fig. 2:1
1856     Chaetetes  (Orbitulites) hemisphaericus — Eichwald , pp. 91
1857     Chaetetes (Orbitulites) hemisphaericus — Eichwald , pp. 37
1860     Chaetetes hemisphaericus m. (pars) — Eichwald , pp. 476, fig. 28:5
1861     Chaetetes hemisphaericus — Eichwald , pp. 112
2002     Mesotrypa bystrowi — Pushkin , pp. 428
2003     Revalotrypa gibbosa (Bassler, 1911) — Pushkin , pp. 45
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Porifera | 
| Class | Demospongea | 
| Order | Chaetetida | 
| Family | Chaetetidae | 
| Subfamily | Chaetetinae | 
| Genus | Chaetetes | 
| Species | hemisphaericus | 
| pyriformis |