Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 100588pat0002pr0001 Creature Body Part, Dragon Head Upper Jaw with Spikes with Trans-Yellow Pattern, Metal Blue Markings, Bright Light Yellow Eye Print Print of this part
• 100588pat0002pr0002 Creature Body Part, Dragon Head Upper Jaw with Spikes with Trans-Yellow Pattern and Dark Blue/Gold Markings Print Print of this part