 Furthermore, the anatomy of fossilized skull fragments of D. Patagonica suggests that there are numerous plesiomorphic and apomorphic characters in comparison to respective extinct snakes, and present day snakes as well.These can be loosely attributed to the adaptive morphological characteristics present in the effects of terrestrial adaptation, in comparison to that of aquatic adaptation which would result in many more water adaptive features, especially in that of the skull and the spine as to ensure water to be a livable environment for the D. Patagonica.There are numerous resources for evidence of the morphological characteristics of D. Patagonica, including a full medium sized skull of D. Patagonica which also has the posterior brain, the vessels, the cranial nerves, the inner ear, as well as the semicircular canals of the skull structure