DAILY NO. 29 · VERIFIED MEASUREMENTS

Size It Up answers – October 20, 2026

The five dinosaurs objects from the Size It Up puzzle on October 20, 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 20, 2026 puzzle ran from a Velociraptor at 2 m to a Brachiosaurus at 22 m — about 11× apart, drawing on dinosaurs. The pair furthest apart was round 1: a Brachiosaurus is 2.1× as big as an American school bus.

ROUND 1

How long is a Brachiosaurus compared with an American school bus?

Answer: Brachiosaurus — 22 m. A Brachiosaurus measures 22 m (length / span), which is 2.1× as big as the reference, an American school bus at 10.7 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 an American school bus — big things get squeezed, small familiar things get stretched.

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ROUND 2

How long is an Allosaurus compared with a Triceratops?

Answer: Allosaurus — 8.5 m. 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.

Source ↗
ROUND 3

How long is an Iguanodon compared with a Stegosaurus?

Answer: Iguanodon — 10 m. 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.

Source ↗
ROUND 4

How long is a Parasaurolophus compared with a Tyrannosaurus rex?

Answer: Parasaurolophus — 9.5 m. A Parasaurolophus measures 9.5 m (length / span), which is about 1.3× smaller than the reference, a Tyrannosaurus rex at 12.3 m.

The hollow head crest may have worked like a trumpet.

Common miss: players tend to inflate a Parasaurolophus when it sits beside a Tyrannosaurus rex — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 5

How long is a Velociraptor compared with a road bicycle?

Answer: Velociraptor — 2 m. A Velociraptor measures 2 m (length / span), which is 1.1× as big as the reference, a road bicycle at 1.8 m.

Real Velociraptors were closer to turkey-sized than movie monsters.

Common miss: players tend to compress a Velociraptor when it sits beside a road bicycle — big things get squeezed, small familiar things get stretched.

Source ↗

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.