Invalid subtaxa: Paoteodon Chow and Sun 1960 [nomen dubium], Thelegnathus Broom 1905 [nomen dubium], Thelegnathus browni Broom 1905 [nomen dubium]
Full reference: R. Lydekker. 1889. Part III - Palaeozoology. Vertebrata. Manual of palaeontology for the use of students with a general introduction on the principles of palaeontology. Volume II. 3rd edn. William Blackwood and Sons, Edinburgh and London 600 p.
Parent taxon: Procolophonoidea according to J. C. Cisneros 2008
Sister taxa: Colognathus, Owenettidae, Pintosaurus, Sclerosauridae
Subtaxa: Acadiella, Coletta, Contritosaurus, Estheriophagus, Eumetabolodon, Gomphiosauridion, Haligonia, Kitchingnathus, Lasasaurus, Leptopleuroninae, Macrophon, Myognathus, Neoprocolophon, Pentaedrusaurus, Phaanthosaurus, Procolophonichnium, Procolophoninae, Procolophonoides, Sauropareion, Spondylolestinae, Teratophon, Thelephon, Thelerpeton, Tichvinskia
Ecology: