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
• 98159pr0003 Animal Body Part, Dinosaur, Tyrannosaurus Rex Tail, with Pin, Reddish Brown and Dark Orange Stripes Print this part is a pair of it
• 98161pr0003 Animal Body Part, Dinosaur, Tyrannosaurus Rex Head with Pin, White Teeth, Dark Orange Top and Dark Brown Stripes Print this part is a pair of it
• 98162pr0003 Animal Body Part, Dinosaur, Tyrannosaurus Rex Leg, Left, with Pin, Dark Orange and Reddish Brown Markings Print this part is a pair of it
• 98163pr0003 Animal Body Part, Dinosaur, Tyrannosaurus Rex Leg, Right, with Pin, Dark Orange and Reddish Brown Markings Print this part is a pair of it