DAILY NO. 17 · VERIFIED MEASUREMENTS
The five dinosaurs objects from the Size It Up puzzle on September 17, 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 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: an Allosaurus measures 8.5 m (length / span), which is about 1.1× smaller than the reference, a Triceratops at 9 m.
The common large predator of its day: far more Allosaurus fossils exist than T. rex ones.
Common miss: players tend to inflate an Allosaurus when it sits beside a Triceratops — big things get squeezed, small familiar things get stretched.
Answer: a Stegosaurus measures 9 m (length / span), which is about 1.1× smaller than the reference, a Parasaurolophus at 9.5 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 Parasaurolophus — big things get squeezed, small familiar things get stretched.
Answer: an Iguanodon measures 10 m (length / span), which is 1.1× as big as the reference, a Stegosaurus 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 Stegosaurus — big things get squeezed, small familiar things get stretched.
Answer: a Brachiosaurus measures 22 m (length / span), which is 1.5× as big as the reference, a Spinosaurus at 15 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 Spinosaurus — 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.