I'm having a hard time understanding claws of the beast. Does it stack with bite of the wolf? To be precise, do you get 2 claw attacks and 1 bite attack per round by having both of these psionic abilities active? Also, I don't understand how much damage claws of the beast does. I created a chart to help simplify this.. is the chart correct? This is for a medium creature - don't go into size increases.
Regarding damage, your chart is correct. The base damage of the claw attacks increases, just like having a larger weapon.
You can manifest both claws of the beast and bite of the wolf at the same time. This will give you 2 claws and 1 bite natural weapons. On a normal character, you could make three attacks as a full attack, each at your highest attack bonus (all three natural weapons are "primary").
However, the claw attacks from claws of the beast comes with extra restrictions on top of that of normal claws. From the final paragraph:
If you attack with a manufactured weapon or another primary natural attack, you can’t make any claw attacks in that round.
If you use this strictly as-written, then you cannot use the power's claw attacks in the same round as making an attack with a manufactured weapon or other primary attacks (such as bite).
This sentence conflicts with the previous paragraph, which details how the claw attacks can be used as secondary weapons alongside a manufactured weapon. I believe that this is likely the result of poor editing. In D&D 3.5, the power did not have the additional text detailing this; it was added in by Dreamscarred Press during their conversion to Pathfinder.
Given this inconsistency, my recommendation is to houserule away the restriction at the end of claws of the beast, allowing the claws to work like normal natural weapons and be combined properly with other weapons.