Procolophonidae is an extinct family of small, lizard-like parareptiles known from the Late Permian to Late Triassic that were distributed across Pangaea, having been reported from Europe, North America, China, South Africa, South America, Antarctica and Australia.

[3] Many members of the group are noted for spines projecting from the quadratojugal bone of the skull, which likely served a defensive purpose as well as possibly also for display.

[6] The family is defined as all taxa more closely related to Procolophon trigoniceps than to Owenetta rubidgei.

[1] Below is a cladogram from Ruta et al. (2011):[7] Coletta seca Pintosaurus magnidentis Sauropareion anoplus Kitchingnathus untabeni Phaanthosaurus ignatjevi Phaanthosaurus simus Eumetabolodon dongshengensis Theledectes perforatus Tichvinskia vjatkensis Pentaedrusaurus ordosianus Neoprocolophon asiaticus Sclerosaurus armatus Scoloparia glyphanodon Leptopleuron lacertinum Soturnia caliodon Hypsognathus fenneri Eumetabolodon bathycephalus Procolophon trigoniceps Teratophon spinigenis Thelerpeton oppressus Timanophon raridentatus Thelephon contritus Anomoiodon liliensterni Kapes amaenus Kapes bentoni Kapes komiensis Kapes majmesculae Below are three cladograms that follow phylogenetic analyses by Butler et al. (2023).

Analysis 1: Strict consensus of 760 most parsimonious trees (MPTs):[8] Eomurruna Procolina Anomoiodon Lasasaurus Kitchingnathus Phonodus Thelephon Kapes bentoni Kapes majmesculae Timanophon Tichvinskia Theledectes Eumetabolodon dongshengensis Phaantosaurus (sic) Sauropareion Pintosaurus Coletta Eumetabolodon bathycephalus Teratophon Thelerpeton Procolophon Neoprocolophon Pentaedrusaurus Mandaphon Scoloparia Sclerosaurus Hwiccewyrm Hypsognathus Soturnia Leptopleuron Analysis 2: Single MPT:[8] Coletta Lasasaurus Sauropareion Kitchingnathus Pintosaurus Phaantosaurus (sic) Eomurruna Eumetabolodon dongshengensis Timanophon Tichvinskia Eumetabolodon bathycephalus Thelerpeton Teratophon Procolophon Kapes bentoni Thelephon Kapes majmesculae Pentaedrusaurus Anomoiodon Theledectes Procolina Phonodus Mandaphon Neoprocolophon Scoloparia Sclerosaurus Hwiccewyrm Leptopleuron Hypsognathus Soturnia Analysis 3: Strict consensus of 18 MPTs:[8] Coletta Sauropareion Kitchingnathus Phaantosaurus (sic) Eumetabolodon dongshengensis Eomurruna Theledectes Procolina Phonodus Lasasaurus Anomoiodon Thelephon Kapes bentoni Kapes majmesculae Timanophon Tichvinskia Eumetabolodon bathycephalus Teratophon Thelerpeton Procolophon Neoprocolophon Pentaedrusaurus Mandaphon Scoloparia Sclerosaurus Hwiccewyrm Hypsognathus Soturnia Leptopleuron