Genus

Orthosphaeridium Eisenack, 1968 emend Kjellström, 1971


GIT 344-244	Orthosphaeridium bispinosum \| Orthosphaeridium bispinosum Turner, 1984	Rapla borehole
GIT 344-245	Orthosphaeridium chondrododora \| Orthosphaeridium chondrododora Loeblich et Tappan, 1971	Rapla borehole	66	Pirgu Stage
GIT 344-246	Orthosphaeridium densiverrucosum \| Orthosphaeridium densiverrucosum Kjellström, 1971	Rapla borehole	145.5	Keila Stage
GIT 344-247	Orthosphaeridium insculptum \| Orthosphaeridium insculptum Loeblich, 1970	Rapla borehole
GIT 344-249	Orthosphaeridium vibrissiferum \| Orthosphaeridium vibrissiferum Loeblich et Tappan, 1971	Rapla borehole	126.6	Oandu Stage
GIT 344-276	Orthosphaeridium insculptum erectum \| Orthosphaeridium insculptum f. erectum n. forma	Rapla borehole	176	Lasnamägi Stage	holotype
GIT 344-277	Orthosphaeridium latispinosum \| Orthosphaeridium latispinosum Uutela et Tynni, 1991	Rapla borehole	146.2	Jõhvi Substage	holotype
GIT 344-278	Orthosphaeridium \| Orthosphaeridium sp.	Rapla borehole	140	Keila Stage