DAILY NO. 20 · VERIFIED MEASUREMENTS
The five dinosaurs objects from the Size It Up puzzle on October 11, 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.
The October 11, 2026 puzzle ran from a Triceratops at 9 m to an Argentinosaurus at 33 m — about 4× apart, drawing on dinosaurs. The pair furthest apart was round 2: a Spinosaurus is 1.2× as big as a Tyrannosaurus rex.
Answer: Triceratops — 9 m. A Triceratops measures 9 m (length / span), which is almost exactly the same size as the reference, a Stegosaurus at 9 m.
The skull alone could reach 2.5 m, among the largest of any land animal.
Common miss: players tend to inflate a Triceratops when it sits beside a Stegosaurus — big things get squeezed, small familiar things get stretched.
Answer: Spinosaurus — 15 m. 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: Parasaurolophus — 9.5 m. A Parasaurolophus measures 9.5 m (length / span), which is about 1.1× smaller than the reference, an American school bus at 10.7 m.
The hollow head crest may have worked like a trumpet.
Common miss: players tend to inflate a Parasaurolophus when it sits beside an American school bus — big things get squeezed, small familiar things get stretched.
Answer: Stegosaurus — 9 m. 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.
Answer: Argentinosaurus — 33 m. An Argentinosaurus measures 33 m (length / span), which is about 1.1× smaller than the reference, a Space Shuttle orbiter at 37.3 m.
Some estimates place this giant at more than 30 metres long.
Common miss: players tend to inflate an Argentinosaurus when it sits beside a Space Shuttle orbiter — 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.