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.

• 98169pr0001 Animal Body Part, Dinosaur, Triceratops Head with Light Bluish Gray Horns and Reddish Brown Top with Dark Brown Print this part is a pair of it
• 98170pr0001 Animal Body Part, Dinosaur, Triceratops Leg, Left, Front, with Pin, Tan Nails and Reddish Brown and Dark Brown Print this part is a pair of it
• 98171pr0001 Animal Body Part, Dinosaur, Triceratops Leg, Right, Front, with Pin, Tan Nails and Reddish Brown and Dark Brown Print this part is a pair of it
• 98172pr0001 Animal Body Part, Dinosaur, Triceratops Leg, Left, Rear / Hind, with Pin, Tan Nails and Reddish Brown and Dark Brown Print this part is a pair of it
• 98173pr0001 Animal Body Part, Dinosaur, Triceratops Leg, Right, Rear / Hind, with Pin, Tan Nails and Reddish Brown and Dark Brown Print this part is a pair of it