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.

• 98058pr0003 Animal Body Part, Dinosaur, Tyrannosaurus Rex Arm / Leg, Left, Small, Black Claws Print this part is a pair of it
• 98059pr0003 Animal Body Part, Dinosaur, Tyrannosaurus Rex Arm / Leg, Right, Small, Black Claws Print this part is a pair of it
• 98159pr0010 Animal Body Part, Dinosaur, Tyrannosaurus Rex Tail, with Pin, Dark Tan Top and Dark Brown Stripes Print this part is a pair of it
• 98161pr0091 Animal Body Part, Dinosaur, Tyrannosaurus Rex Head with Pin, Light Bluish Grey Teeth, Tan Markings, Dark Brown Stripes Print this part is a pair of it
• 98162pr0014 Animal Body Part, Dinosaur, Carnotaurus Leg, Left, with Pin, Black Claws and Dark Brown Spots over Dark Tan Print - Left this part is a pair of it
• 98163pr0014 Animal Body Part, Dinosaur, Carnotaurus Leg, Right, with Pin, Black Claws and Dark Brown Spots over Dark Tan Print this part is a pair of it