Genus

Micrhystridium Deflandre, 1939


TUG 1521-20	Micrhystridium lanatum \| Micrhystridium lanatum Volkova, 1968			Middle Cambrian (old nomenclature)
TUG 1521-35	Micrhystridium spinosum \| Micrhystridium spinosum Volkova, 1969			Middle Cambrian (old nomenclature)
TUG 1521-45	Micrhystridium dissimilare \| Micrhystridium dissimilare Volkova, 1969			Middle Cambrian (old nomenclature)
TUG 1521-47	Micrhystridium notatum \| Micrhystridium notatum Volkova, 1969			Middle Cambrian (old nomenclature)
TUG 1521-58	Micrhystridium notatum \| Micrhystridium notatum Volkova, 1969			Middle Cambrian (old nomenclature)
TUG 1521-59	Micrhystridium notatum \| Micrhystridium notatum Volkova, 1969			Middle Cambrian (old nomenclature)
TUG 1521-60	Micrhystridium notatum \| Micrhystridium notatum Volkova, 1969			Middle Cambrian (old nomenclature)
TUG 1521-73	Micrhystridium lanceolatum \| Micrhystridium lanceolatum Vanguestaine , 1974			Middle Cambrian (old nomenclature)
GIT 344-158	Micrhystridium brevispinosum \| Micrhystridium brevispinosum Uutela et Tynni, 1991	Rapla borehole	36.8	Pirgu Stage	holotype
GIT 344-159	Micrhystridium curvatum \| Micrhystridium curvatum Uutela et Tynni, 1991	Rapla borehole	36.8	Pirgu Stage	holotype