†unranked clade Placodontiformes Neenan et al. 2013 (diapsid)
Full reference: J. M. Neenan, N. Klein, and T. M. Scheyer. 2013. European origin of placodont marine reptiles and the evolution of crushing dentition in Placodontia. Nature Communications
Parent taxon: Sauropterygia according to J. M. Neenan et al. 2013
See also Miguel Chaves et al. 2018
Sister taxa: Atopodentatus, Cercidopleura, Dicranopleura, Eosauropterygia, Eusauropterygia, Ischyrosaurus, Microleptosaurus, Nanchangosauroidea, Nothosauria, Nothosauriformes, Pistosauria, Placodontia, Plesiosauria, Simosauria
Subtaxa: Palatodonta
Ecology:
Distribution: found only at Steengroeve Winterswijk (Triassic of Netherlands)