DAILY NO. 18 · VERIFIED MEASUREMENTS
The five dinosaurs objects from the Size It Up puzzle on September 18, 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 Spinosaurus measures 15 m (length / span), which is 1.2× as big as the reference, a Tyrannosaurus rex at 12.3 m.
The longest predatory dinosaur known, and probably one that spent much of its life in water.
Common miss: players tend to compress a Spinosaurus when it sits beside a Tyrannosaurus rex — big things get squeezed, small familiar things get stretched.
Answer: a Tyrannosaurus rex measures 12.3 m (length / span), which is about 1.2× smaller than the reference, a Spinosaurus at 15 m.
A large T. rex reached around 12.3 metres long.
Common miss: players tend to inflate a Tyrannosaurus rex when it sits beside a Spinosaurus — big things get squeezed, small familiar things get stretched.
Answer: a Pteranodon wingspan measures 6 m (length / span), which is almost exactly the same size as the reference, an American pickup truck at 5.9 m.
Measured across the wings — a span no living bird comes close to.
Common miss: players tend to compress a Pteranodon wingspan when it sits beside an American pickup truck — big things get squeezed, small familiar things get stretched.
Answer: a Brachiosaurus measures 22 m (length / span), which is 2.4× as big as the reference, a Stegosaurus at 9 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 Stegosaurus — big things get squeezed, small familiar things get stretched.
Answer: a Stegosaurus measures 9 m (length / span), which is almost exactly the same size as the reference, a Triceratops at 9 m.
A brain the size of a lime, in a body as long as a bus.
Common miss: players tend to inflate a Stegosaurus when it sits beside a Triceratops — 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.