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.

• 98169pr0002 Animal Body Part, Dinosaur, Triceratops Head with Reddish Brown and Olive Green Brindle, Light Bluish Gray Horns this part is a pair of it
• 98170pr0002 Animal Body Part, Dinosaur, Triceratops Leg, Left, Front, with Pin, Light Bluish Gray Nails and Reddish Brown and Olive Green Print this part is a pair of it
• 98171pr0002 Animal Body Part, Dinosaur, Triceratops Leg, Right, Front, with Pin, Light Bluish Gray Nails and Reddish Brown and Olive Green Print this part is a pair of it
• 98172pr0002 Animal Body Part, Dinosaur, Triceratops Leg, Left, Rear / Hind, with Pin, Light Bluish Gray Nails and Reddish Brown and Olive Green Print this part is a pair of it
• 98173pr0002 Animal Body Part, Dinosaur, Triceratops Leg, Right, Rear / Hind, with Pin, Light Bluish Gray Nails and Reddish Brown and Olive Green Print this part is a pair of it