Snakes and Evolution

Snakes and Evolution

BIO/101

Snakes are reptiles that have been on Earth for over millions of years. Snakes are a peculiar creature because the true origin of snakes is unknown. The delicacy of their structure allows for error in fossil records, because many of the first fossil records of snakes are incomplete skeletons. A fact known to be true is that snakes were legged vertebrates. The structure of a snake may be complex, but it is suited for survival. This fact changes factors such as food, shelter and survival, thus the evolution of snakes.

Fossil records of snakes date back to the crustaceous period. This era signified the end of dinosaurs but there is evidence of snake life in this era. An interesting fact is that dinosaurs are descendants of cotylosaurs which...