Society for the Study of Amphibians and Reptiles exchanges and international cooperative efforts for study and publications. The society was founded as a regional organization, The Ohio Herpetological Society (OHS), by two young but serious-minded amateurs, Kraig Adler and David M. Dennis, then 16 and 17 years of age respectively. They decided in the fall of 1957 to formalize interactions amongst a small group of amateur herpetologists throughout Ohio and began publishing a combined journal and newsletter (called the "Trimonthly Report") in January 1958. The name of the society was changed to The Society for the Study of Amphibians and Reptiles on January 1, 1967. The SSAR publishes
Evolution of reptiles phylogenetics place birds in the dinosaur clade Theropoda. According to the current consensus, Aves and Crocodilia are the sole living members of an unranked clade, the Archosauria. </div>Simplified cladogram from Senter (2007). The close of the Cretaceous period saw the demise of the Mesozoic era reptilian megafauna. Along with massive amount of volcanic activity at the time, the meteor impact that created the Cretaceous–Paleogene boundary is accepted as the main cause for this mass extinction event. Of the large marine reptiles, only sea turtles are left, and, of the dinosaurs, only the small feathered theropods survived in the form of