Is there an error in the universal monster rules for table:natural attacks by size?

I am working on a druid character and just getting around to wild shapes natural attacks and I spotted what should be an error in its damage progression under the universal monster rules which conflicts with the newer damage dice progression rules.

Official Damage Dice Progression Chart $$\begin{array}{l|l} \text{Level} & \text{Dice}\\ \hline 0 & 0 \\ 1 & 1d1 \\ 2 & 1d2\\ 3 & 1d3\\ 4 & 1d4\\ 5 & 1d6\\ 6 & 1d8\\ 7 & 1d10\\ 8 & 2d6\\ 9 & 2d8\\ 10 & 3d6\\ 11 & 3d8\\ 12 & 4d6\\ 13 & 4d8\\ 14 & 6d6\\ 15 & 6d8\\ 16 & 8d6\\ 17 & 8d8\\ 18 & 12d6\\ 19 & 12d8\\ 20 & 16d6\\ \end{array}$$

Here we have the chart for Bite

$$\begin{array}{l|l|l} \text{Size} & \text{Dice Level} & \text{Dice}\\ \hline Fine & 1 & 1d1\\ Diminutive & 2 & 1d2\\ Tiny & 3 & 1d3\\ Small & 4 & 1d4\\ Medium & 5 & 1d6\\ Large & 6 & 1d8\\ Huge & 8 & 2d6\\ Gargantuan & 9 & 2d8\\ Colossal & 12 & 4d6\\ \end{array}$$

Here we can clearly see that huge to gargantuan is only 1 and not 2, and from gargantuan to colossal is 3 instead of 2. If gargantuan was changed from 9 to 10 then the chart would be correct, its the only value that's off. So is this just a mistake or is this actually what its suppose to be?