Odoiporosaurus teruzzii was named by Renesto et al. (2014) [Medium-sized pachypleurosaur, its standard length, (the length of the last four posterior dorsal centra according to riePPel 1989 and Sander 1989) is about 3.2 cm, unequivocally diagnosed by the presence of an ulna mediolaterally expanded, especially in its proximal half, wedgeshaped in cross section, with thick concave medial margin and thin, blade-like lateral margin, and by upper temporal fenestrae of the same longitudinal length of the nasal openings. Additional characters: skull with unconstricted temporal region; presence of heavily sculptured frontals and of wide spatulate and striated teeth; ribs not pachyostotic. Differs also from all known Germanic and Alpine pachypleurosaurs for the proximally broadened, laterally flattened ulna and for the absence of an obturator foramen in the pubis. Differs from Serpianosaurus mirigiolensis for the proportionally much shorter skull, for the lack of the posterior process of the quadrate, for the larger upper temporal fenestra, for the heavily sculptured frontals and for the wider spatulate teeth on the maxilla and on the dentary. Differs from all Neusticosaurus species for the large, spatulated and striated tooth crowns, for the gastralia made of five elements, for the proportionally longer temporal fenestrae and for the absence of rib pachyostosis. Differs from the pachypleurosaurs of the Anarosaurus-Dactylosaurus clade for the unconstricted temporal region and for the contact between premaxillae and frontals that separate the nasals from each other. Differs from Keichousaurus for the presence of unfused parietals and frontals and for the lateral outline of the ulna and differs from other Chinese pachypleurosaurs for the position of the pineal foramen.]. Its type specimen is BES SC 1893, a skeleton (disarticulated, three dimensionally preserved skeleton. The specimen is incomplete, and lacks the neck, the tail, most elements of the left pectoral and pelvic ), and it is a 3D body fossil. Its type locality is Rio Vallone, Viggiù, Monte San Giorgio, which is in a Longobardian lagoonal/restricted shallow subtidal limestone in the Meride Formation of Italy. It is the type species of Odoiporosaurus.