ALL ANSWERS · DINOSAURS · DAILY No. 22 · SEPTEMBER 25, 2026
Size It Up Dinosaurs answer: September 25
The five Dinosaurs silhouettes for September 25, with the true sizes. If you have not played yet, this page is a spoiler — play these five first, then come back to argue with the numbers.
Day 22 ran from a protoceratops (1.8 m) to a brachiosaurus (22 m). The widest gap was round 5, Brontosaurus against Protoceratops, at 12×; the closest call was round 4, Ouranosaurus against Gallimimus, only 1.2× apart — the kind of round that separates a 90 from a 60.
SPOILER · TODAY’S FIVE
You have not finished today’s puzzle on this device. The answers below are blurred so you can still play first.
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ROUND 1
Camptosaurus Camptosaurus dispar vs Apatosaurus Apatosaurus louisae
Apatosaurus · reference · 21 m Camptosaurus · true length · 5 m 4.2× shorter than the apatosaurus
Camptosaurus is represented here by a selected estimated total length of 5 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 2
Brachiosaurus Brachiosaurus altithorax vs Dilophosaurus Dilophosaurus wetherilli
Dilophosaurus · reference · 7 m Brachiosaurus · true length · 22 m 3.1× longer than the dilophosaurus
Brachiosaurus is represented here by a selected estimated total length of 22 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 3
Deinonychus Deinonychus antirrhopus vs Eotyrannus Eotyrannus lengi
Eotyrannus · reference · 5 m Deinonychus · true length · 3.4 m 1.5× shorter than the eotyrannus
Deinonychus is represented here by a selected estimated total length of 3.4 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 4
Ouranosaurus Ouranosaurus nigeriensis vs Gallimimus Gallimimus bullatus
Gallimimus · reference · 6 m Ouranosaurus · true length · 7 m 1.2× longer than the gallimimus
Ouranosaurus is represented here by a selected estimated total length of 7 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 5
Brontosaurus Brontosaurus excelsus vs Protoceratops Protoceratops andrewsi
Protoceratops · reference · 1.8 m Brontosaurus · true length · 22 m 12× longer than the protoceratops
Brontosaurus is represented here by a selected estimated total length of 22 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
Beat these tomorrow
Every round is worth up to 100 points: within 6% of the true size scores 100, half or double scores 45, five times off scores zero. The daily puzzle is the same five for everyone and refreshes at midnight in your time zone; if you want more than five, Size It Up Unlimited draws fresh pairs from the whole library for as long as you like.