Tyrannosaurus Rex quiz

More questions about Tyrannosaurus Rex

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1. 1 Easy

   What was the primary function of the heavy Tyrannosaurus Rex tail?

   Answer: Balance

   Why: With at least 40 tail vertebrae, it counterweighted the huge head and also anchored the caudofemoralis, the leg muscle that powered each stride.

2. 2 Medium

   What does the name Tyrannosaurus Rex literally translate to in English?

   Answer: Tyrant lizard king

   Why: The name fuses Greek tyrannos and sauros with Latin rex; the thunder lizard label belongs to Brontosaurus, named by Marsh in 1879.

3. 3 Hard

   How many pounds did a growing Tyrannosaurus Rex gain annually?

   Answer: 1,700 pounds

   Why: Gregory Erickson's 2004 bone ring study clocked the peak at 767 kg a year, sustained for only about four adolescent years before growth flattened.

4. 4 Easy

   How did Tyrannosaurus rex bones turn into stone fossils over millions of years?

   Answer: Mineral replacement

   Why: Water seeping through rock deposits minerals like silica and calcite into bone pores, preserving their shape.

5. 5 Medium

   In which dinosaur suborder is the Tyrannosaurus Rex classified?

   Answer: Theropoda

   Why: Theropoda is the meat-eating branch of the lizard-hipped dinosaurs and runs from crow-sized Microraptor to T. rex; its sister branch holds the long-necked plant eaters.

6. 6 Hard

   What was the final auction price for the Rex named Stan?

   Answer: $31.8 million

   Why: Christie's sold Stan on 6 October 2020 for exactly $31,847,500 with fees; the buyer was Abu Dhabi, where the skeleton now anchors a new museum.