DAILY NO. 19 · VERIFIED MEASUREMENTS
The five dinosaurs objects from the Size It Up puzzle on October 10, 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 10, 2026 puzzle ran from a Pteranodon wingspan at 6 m to a Tyrannosaurus rex at 12.3 m — about 2× apart, drawing on dinosaurs. The pair furthest apart was round 3: a Triceratops is about 1.4× smaller than a Tyrannosaurus rex.
Answer: Parasaurolophus — 9.5 m. 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: Tyrannosaurus rex — 12.3 m. A Tyrannosaurus rex measures 12.3 m (length / span), which is 1.1× as big as the reference, an American school bus at 10.7 m.
A large T. rex reached around 12.3 metres long.
Common miss: players tend to compress a Tyrannosaurus rex when it sits beside an American school bus — big things get squeezed, small familiar things get stretched.
Answer: Triceratops — 9 m. A Triceratops measures 9 m (length / span), which is about 1.4× smaller than the reference, a Tyrannosaurus rex at 12.3 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 Tyrannosaurus rex — big things get squeezed, small familiar things get stretched.
Answer: Iguanodon — 10 m. An Iguanodon measures 10 m (length / span), which is 1.1× as big as the reference, a Triceratops at 9 m.
Its thumb spike was first reconstructed, wrongly, as a horn on the nose.
Common miss: players tend to compress an Iguanodon when it sits beside a Triceratops — big things get squeezed, small familiar things get stretched.
Answer: Pteranodon Wingspan — 6 m. 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.
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.