Storrs, G. W. 1993 The systematic position of <em>Silvestrosaurus</em> and a classification of Triassic sauropterygians (Neodiapsida) Palaontologische Zeitschrift 67 177-191 Captorhinomorpha Petrolacosaurus Younginiformes Claudiosaurus Neusticosaurus Serpianosaurus Anarosaurus Dactylosaurus Keichousaurus Placodontia Simosaurus Corosaurus Ceresiosaurus Lariosaurus Cymatosaurus Silvestrosaurus Nothosaurus Paranothosaurus Pistosaurus Plesiosauroidea Pliosauroidea Osteology Maximum Parsimony Based on reanalysis of the original matrix. Storrs_1993a