24 genera are assigned to the class PETALONAMAE

Order	Genus	FOP	FOS	LOP	LOS
ERNIETTAMORPHA	Bomakellia	V	u	V	u
ERNIETTAMORPHA	Ernietta	V	u	V	u
ERNIETTAMORPHA	Inkrylovia	V	u	V	u
ERNIETTAMORPHA	Mialsemia	V	u	V	u
ERNIETTAMORPHA	Nasepia	V	u	V	u
ERNIETTAMORPHA	Phyllozoon	V	u	V	u
ERNIETTAMORPHA	Praecambridium	V	u	V	u
ERNIETTAMORPHA	Swartpuntia	V	u	V	u
ERNIETTAMORPHA	Vendia	V	u	V	u
ERNIETTAMORPHA	Vendomia	V	u	V	u
ERNIETTAMORPHA	Windermeria	V	u	V	u
RANGEOMORPHA	Arborea	V	u	V	u
RANGEOMORPHA	Glaessnerina	V	u	V	u
RANGEOMORPHA	Khatyspytia	V	u	V	u
RANGEOMORPHA	Paracharnia	V	u	V	u
RANGEOMORPHA	Rangea	V	u	V	u
RANGEOMORPHA	Thaumoptilon	Cm	mMid-u	Cm	mMid-u
RANGEOMORPHA	Vauzutsinia	V	u	V	u
uncertain	Archaeichnium	V	u	V	u
uncertain	Ausia	V	u	V	u
uncertain	Emmonsaspis	Cm	Boto	Cm	Boto
uncertain	Ramellina	V	u	V	u
uncertain	Vauzutsubua	V	u	V	u
uncertain	Zolotytsia	V	u	V	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).