As time went on the amphibians evolved. They lost their snouts and brow ridges as their heads became more rounded, their eyes moving forward and their nasal pits becoming an actual nose. The crests on their audial pits and the pits themselves actually became pointy ridged ears. Rather than walk on all four, they became bipeds. For reasons no one understands, their new hands, former fore feet, retained five digits while their feet lost two toes each. Both hands and feet lost the webbing between the fingers and toes, though both hands and feet broadened to compenstae for the lack. While the females lost thier dorsal crest all together, the males dorsal crest became smaller and located only on their heads, running from their forehead to where their head meets their neck. Though a bit of the head crest hangs down below their shoulders on some of the more virile males. The also lost their digging claws. Thus the modern Casisomans came into being.

Coloration of the Casisomans depends largely on the habitat they were raised in, though the coloroation of their parents will have an affect on the offsprings color. Colors range from browns to greens to shades of blue-green, to even blues. The have patches that are a lighter shade of the same color as their main body color. The females are typically duller colors than the males.

It is extremely difficult to make a Casisoman angry, they simply see being angry as a waste of their time and effort. This is not to say that Casisomans can not be upset by the things that happen to them. They simply view becoming upset and becoming angry as two very seperate emotions that have nothing in common. When upset they very often seek to avenge themselves on those who upset them, approaching such vengences with the same quiet determination they face the rest of their lives with.