Genus

Pyrgocystis Bather, 1915

						Images
GIT 643-15	Pyrgocystis \| Pyrgocystis sp.	Rakvere		Rakvere Stage
GIT 643-16	Pyrgocystis \| Pyrgocystis sp.	Rakvere		Rakvere Stage
GIT 643-17	Pyrgocystis \| Pyrgocystis sp.	Kohtla		Kukruse Stage