6 genera are assigned to the class OPHIOCISTIOIDEA

Order	Genus	FOP	FOS	LOP	LOS
uncertain	Cardioserra	D	Eife	D	Give-l
uncertain	Eucladia	S	Ludl-l	S	Ludl-l
uncertain	Euthemon	S	Wenl-u	S	Wenl-u
uncertain	Rotasaccus	D	Give	D	Give
uncertain	Sollasina	S	Ludl-l	D	Eife
uncertain	Volchovia	O	Aren-u	O	Ashg-u

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FOP = Period of first occurrence
FOS = Stage of first occurrence
LOP = Period of last occurrence
LOS = Stage of last occurrence

Stage abbreviations follow Sepkoski (2002).