DAILY NO. 21 · VERIFIED MEASUREMENTS
The five dinosaurs objects from the Size It Up puzzle on September 21, 2026, with the measured size of each, the reference it was compared against, a source you can check, and how the community's guesses landed. Want the surprise first? Replay this puzzle — archived days never touch your streak.
Answer: a Tyrannosaurus rex measures 12.3 m (length / span), which is 1.4× as big as the reference, a Triceratops at 9 m.
A large T. rex reached around 12.3 metres long.
Common miss: players tend to compress a Tyrannosaurus rex when it sits beside a Triceratops — big things get squeezed, small familiar things get stretched.
Answer: a Brachiosaurus measures 22 m (length / span), which is 1.8× as big as the reference, a Tyrannosaurus rex at 12.3 m.
Brachiosaurus held its neck upward, making it far taller than long-tailed sauropods of similar length.
Common miss: players tend to compress a Brachiosaurus when it sits beside a Tyrannosaurus rex — big things get squeezed, small familiar things get stretched.
Answer: a Diplodocus measures 25 m (length / span), which is about 1.5× smaller than the reference, a Space Shuttle orbiter at 37.3 m.
Almost half of Diplodocus was tail, which may have cracked like a whip.
Common miss: players tend to inflate a Diplodocus when it sits beside a Space Shuttle orbiter — big things get squeezed, small familiar things get stretched.
Answer: a Parasaurolophus measures 9.5 m (length / span), which is 1.1× as big as the reference, a Stegosaurus at 9 m.
The hollow head crest may have worked like a trumpet.
Common miss: players tend to compress a Parasaurolophus when it sits beside a Stegosaurus — big things get squeezed, small familiar things get stretched.
Answer: an Argentinosaurus measures 33 m (length / span), which is 1.3× as big as the reference, a blue whale at 25 m.
Some estimates place this giant at more than 30 metres long.
Common miss: players tend to compress an Argentinosaurus when it sits beside a blue whale — big things get squeezed, small familiar things get stretched.
Sizes are measured along the axis named in each round and link to their published source. Explore the full library by category, or read how scoring works.