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.

• 40373 Animal / Creature Body Part, Dinosaur Body Quarter with Pin Holes this part is a print of it
• 40374pr0002 Animal Body Part, Dinosaur Body Quarter with Pin Holes, Dark Gray Streaked/Sand Blue/Black Streaked/Red Spotted Print this part is a pair of it
• 40382c01pr0002 Animal Body Part, Dinosaur, Legs Long, Dark Gray and Red Print Pair of this part