DAILY NO. 27 · VERIFIED MEASUREMENTS
Today's five dinosaurs Size It Up comparisons with the measured size of each object, its reference and a source you can check. The puzzle is still live, so every answer stays hidden until you tap it. Haven't played yet? Play today's puzzle first.
The October 18, 2026 puzzle ran from an Allosaurus at 8.5 m to a Brachiosaurus at 22 m — about 3× apart, drawing on dinosaurs. The pair furthest apart was round 5: an Allosaurus is 1.4× as big as an American pickup truck.
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: Iguanodon — 10 m. An Iguanodon measures 10 m (length / span), which is about 1.2× smaller than the reference, a Tyrannosaurus rex at 12.3 m.
Its thumb spike was first reconstructed, wrongly, as a horn on the nose.
Common miss: players tend to inflate an Iguanodon when it sits beside a Tyrannosaurus rex — big things get squeezed, small familiar things get stretched.
Answer: Brachiosaurus — 22 m. A Brachiosaurus measures 22 m (length / span), which is 1.2× as big as the reference, a rescue helicopter at 17.8 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 rescue helicopter — 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: Allosaurus — 8.5 m. An Allosaurus measures 8.5 m (length / span), which is 1.4× as big as the reference, an American pickup truck at 5.9 m.
The common large predator of its day: far more Allosaurus fossils exist than T. rex ones.
Common miss: players tend to compress an Allosaurus 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.