Procolophonoidea includes the families Owenettidae and Procolophonidae.
Sclerosaurus, which is placed within its own family Sclerosauridae, may be a member of the superfamily as well.
In 1997, De Braga and Rieppel defined this same taxon (the oldest common ancestor of Procolophonidae and Owenettidae and all its descendants) using the name Procolophoniformes.

When the superfamily was constructed in 1956, it was thought to be within the anthracosaur suborder Diadectomorpha.
Since then it has been placed within the suborder Procolophonia along with the pareiasaurs, a group of large herbivorous Permian parareptiles.
 
     
Procolophonia
Procolophonoidea
Family Owenettidae
Species "Owenetta" kitchingorum
Genus Barasaurus
Genus Candelaria
Genus Owenetta
Genus Ruhuhuaria
Genus Saurodektes
Family Procolophonidae
?
Genus Gomphiosauridion
?
Genus Kinelia
?
Genus Spondylolestes
?
Genus Xenodiphyodon
Genus Coletta
Genus Kitchingnathus
Genus Lasasaurus
Genus Phaanthosaurus
Genus Pintosaurus
Genus Sauropareion
Genus Tichvinskia
Subfmily Leptopleuroninae
Subfmily Procolophoninae
Subfmily Theledectinae
Procolophonoidea includes the families Owenettidae and Procolophonidae. Sclerosaurus, which is placed within its own family Sclerosauridae, may be a member of the superfamily as well. In 1997, De Braga and Rieppel defined this same taxon (the oldest common ancestor of Procolophonidae and Owenettidae and all its descendants) using the name Procolophoniformes.
When the superfamily was constructed in 1956, it was thought to be within the anthracosaur suborder Diadectomorpha. Since then it has been placed within the suborder Procolophonia along with the pareiasaurs, a group of large herbivorous Permian parareptiles.  
     
Procolophonia
Procolophonoidea
Family Owenettidae
Species "Owenetta" kitchingorum
Genus Barasaurus
Genus Candelaria
Genus Owenetta
Genus Ruhuhuaria
Genus Saurodektes
Family Procolophonidae
? Genus Gomphiosauridion
? Genus Kinelia
? Genus Spondylolestes
? Genus Xenodiphyodon
Genus Coletta
Genus Kitchingnathus
Genus Lasasaurus
Genus Phaanthosaurus
Genus Pintosaurus
Genus Sauropareion
Genus Tichvinskia
Subfmily Leptopleuroninae
Subfmily Procolophoninae
Subfmily Theledectinae
Procolophonoidea