"On the Fence" versus "All in": Insights from Turtles for the Evolution of Aquatic Locomotor Specializations and Habitat Transitions in Tetrapod Vertebrates.
Blob RW, Mayerl CJ, Rivera AR, Rivera G, Young VK. "On the Fence" versus "All in": Insights from Turtles for the Evolution of Aquatic Locomotor Specializations and Habitat Transitions in Tetrapod Vertebrates. Integr Comp Biol. 2016 12; 56(6):1310-1322.