DAILY NO. 3 · VERIFIED MEASUREMENTS

Size It Up answers – September 24, 2026

The September 24, 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 4: a Brachiosaurus is 1.5× as big as a Spinosaurus.

Puzzle #3 asked about a Spinosaurus, an Ankylosaurus, a Velociraptor, a Brachiosaurus and an Iguanodon. Each answer below gives the measured size, the reference it stood beside and the source behind the number. Want the surprise first? Replay this puzzle — archived days never touch your streak.

ROUND 1

How long is a Spinosaurus compared with a Tyrannosaurus rex?

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.

Source ↗
ROUND 2

How long is an Ankylosaurus compared with a Stegosaurus?

Answer: Ankylosaurus — 8 m. An Ankylosaurus measures 8 m (length / span), which is about 1.1× smaller than the reference, a Stegosaurus at 9 m.

The tail club weighed tens of kilos and could swing hard enough to break bone.

Common miss: players tend to inflate an Ankylosaurus when it sits beside a Stegosaurus — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 3

How long is a Velociraptor compared with a queen bed?

Answer: Velociraptor — 2 m. A Velociraptor measures 2 m (length / span), which is almost exactly the same size as the reference, a queen bed at 2 m.

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

Common miss: players tend to inflate a Velociraptor when it sits beside a queen bed — big things get squeezed, small familiar things get stretched.

Source ↗
ROUND 4

How long is a Brachiosaurus compared with a Spinosaurus?

Answer: Brachiosaurus — 22 m. 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.

Source ↗
ROUND 5

How long is an Iguanodon compared with a Triceratops?

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.

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.