Subclass

Prosobranchia Milne-Edwards, 1848

Selection of related publications

Öpik, A. 1930. Beiträge zur Kenntnis der Kukruse-(C2-C3-)Stufe in Eesti. IV. Tartu Ülikooli Geoloogia Instituudi Toimetused 24, 1-34.

Koken, E., Perner, J. 1925. Die Gastropoden des baltischen Untersilurs. Zapiski Rossiiskoi Akademii Nauk 37, 1, 1-318. Venemaa Teaduste Akadeemia.

Eichwald, E. 1856. Beitrag zur geographischen Verbreitung der fossilen Thiere Russlands. Alte Periode. (Fortsetzung. S. Bulletin 1856. N 2. pag. 406.). Bulletin of the Moscow Society of Naturalists. Geological series 29, IV, 555-608.

List of species

1. Fusispira bullatus Koken, 1897 | Pirgu Stage

2. Fusispira inflata Koken et Perner, 1925 | Rakvere Stage

3. Fusispira ovalis Koken, 1897 | Vormsi Stage

4. Subulites amphora (Eichwald, 1854) | Idavere Substage→Rakvere Stage

5. Subulites attenuatus Lindström, 1884

6. Subulites enormis Koken & Perner, 1925 | Katian

7. Subulites gigas (Eichwald, 1842) | Vormsi Stage→Pirgu Stage

8. Subulites lineolata (Lindström, 1884)

9. Subulites priscus (Eichwald, 1840) | Aseri Stage→Kukruse Stage

10. Subulites revalensis Koken, 1897 | Lasnamägi Stage→Kukruse Stage

11. Subulites subula Koken, 1896 | Rakvere Stage→Pirgu Stage

12. Subulites toernquisti Koken et Perner, 1925

13. Subulites wesenbergensis Koken et Perner, 1925

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Mollusca
Class	Gastropoda
Subclass	Archaeobranchia
	Archaeogastropoda
	Eogastropoda
	Neritimorpha
	Orthogastropoda
	Prosobranchia
Superorder	Caenogastropoda
Subclass	Streptoneura
Order	Bellerophontida
	Heterostropha
Superfamily	Patelloidea
Genus	Semizona