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.

• 40374 Animal / Creature Body Part, Dinosaur Body Quarter with Pins [Plain] this part is a print of it
• 40373pr0005 Animal Body Part, Dinosaur Body Quarter with Pin Holes, Dark Gray Scales on Dark Red and Gray Print this part is a pair of it