North American Plesiosaurs

North American Plesiosaurs by Samuel Wendell Williston delves into the detailed anatomy of plesiosaurs focusing on the skull vertebrae and girdles. The book discusses the structure of vertebrae articulation of bones in girdles and skull morphology highlighting unique features and evolutionary adaptations. It includes measurements comparisons with other species and illustrations of plesiosaur anatomy providing valuable insights into these ancient marine reptiles' diversity and evolution.