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.

• 98058pr0007 Animal Body Part, Dinosaur, Tyrannosaurus Rex Arm / Leg, Left, Small, Dark Brown Claws Print this part is a pair of it
• 98059pr0007 Animal Body Part, Dinosaur, Tyrannosaurus Rex Arm / Leg, Right, Small, Dark Brown Claws Print this part is a pair of it
• 98159pr0006 Animal Body Part, Dinosaur, Tyrannosaurus Rex Tail, with Pin, Dark Bluish Gray Top and Dark Brown Stripes Print this part is a pair of it
• 98161pr0006 Animal Body Part, Dinosaur, Tyrannosaurus Rex Head with Pin, Light Bluish Grey Teeth, Dark Bluish Gray Top and Dark Brown Stripes Print this part is a pair of it
• 98162pr0007 Animal Body Part, Dinosaur, Tyrannosaurus Rex Leg, Left, with Pin, Dark Brown Claws and Dark Brown Stripes on Dark Bluish gray Print this part is a pair of it
• 98163pr0007 Animal Body Part, Dinosaur, Tyrannosaurus Rex Leg, Right, with Pin, Dark Brown Claws and Dark Brown Stripes on Dark Bluish Gray Print this part is a pair of it