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.

• 65428pr0001 Creature Body Part, Dragon Head Upper Jaw with White Teeth, Yellow/Dark Red Markings Print this part is a pair of it
• 65428pr0004 Creature Body Part, Dragon Head Upper Jaw with White Teeth, Yellow Eyes, Yellow/Dark Blue Markings Print Pair of this part