plagiosaur noun1 •Any of the superfamily †Plagiosauroidea of stereospondyl temnospondyls that lived during the Triassic period.Certain short-faced Triassic forms tend to have reduced counts; the brachyopid Batrachosuchus having but 17 maxillary teeth and the plagiosaur Gerrothorax having somewhat over 26. — 1965 formsplagiosaurs
