Serpentsaur

The serpentsaur has replaced the eelsaur. It has reduced its size even more so it could improve its speed and agility. Its limbs are almost all gone and are only small fins. Its back sail has reduced and become more streamline as well. Like its ancestor it can change its color and thus mimics the color of mud mostly. It still comes onto land to sunbathe but cannot walk very well anymore, so it slithers like a snake.