thumb|Platyhystrix thumb|Prosalirus thumb|Peltobatrachus thumb|Pantylus thumb|Paracyclotosaurus thumb|Pelodosotis thumb|Pelorocephalus Pachybatrachus Pachygonia Palaeobatrachus Palaeomolgophis Palaeopleurodeles Palaeoproteus Paleoamphiuma Panchetosaurus Pangerpeton Pantylus Paracyclotosaurus Paradiscoglossus Paralatonia Pariotichus Parioxes Parotosaurus Parrisia Pelodosotis Pelorocephalus Pelophilus Peltobatrachus Peltostega Peratosauroides Phlegethontia Pholidogaster Phonerpeton Piceoerpeton Plagiobatrachus Plagiorophus Plagiosaurus Plagioscutum Plagiosternum Plagiosuchus Platycepsion Platyhystrix Platyoposaurus Platyrhinops Platystega Plemmyradytes Pleuroptyx Pliobatrachus Pneumatostega Prionosuchus Proamphiuma Procerobatrachus Procochleosaurus Procynops Prodesmodon Prodiscoglossus Promastodonsaurus Propelodytes Prosalirus Prosiren Proterogyrinus Prothoosuchus Pseudophlegethontia Ptychosphenodon Ptyonius Putterilia
Q
Quasicaecelia Quasicyclotosaurus
R
thumb|Rhinesuchus Rileymillerus Rewana Rhadalognathus Rhadinosteus Rhineceps Rhinesuchoides Rhinesuchus Rhinophrynus Rhynchonkos Rhytidosteus Ricnodon Rotaurisaurus Rubricacaecilia
S