ALL ANSWERS · DINOSAURS · DAILY No. 29 · OCTOBER 2, 2026
Size It Up Dinosaurs answer: October 2
The five Dinosaurs silhouettes for October 2, 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 29 ran from a huayangosaurus (4.5 m) to a brontosaurus (22 m). The widest gap was round 1, Acrocanthosaurus against Kentrosaurus, at 2.4×; the closest call was round 4, Concavenator against Camptosaurus, 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
Acrocanthosaurus Acrocanthosaurus atokensis vs Kentrosaurus Kentrosaurus aethiopicus
Kentrosaurus · reference · 5 m Acrocanthosaurus · true length · 12 m 2.4× longer than the kentrosaurus
Acrocanthosaurus is represented here by a selected estimated total length of 12 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 2
Yangchuanosaurus Yangchuanosaurus shangyouensis vs Brontosaurus Brontosaurus excelsus
Brontosaurus · reference · 22 m Yangchuanosaurus · true length · 10 m 2.2× shorter than the brontosaurus
Yangchuanosaurus is represented here by a selected estimated total length of 10 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 3
Iguanodon Iguanodon bernissartensis vs Dilophosaurus Dilophosaurus wetherilli
Dilophosaurus · reference · 7 m Iguanodon · true length · 10 m 1.4× longer than the dilophosaurus
Iguanodon is represented here by a selected estimated total length of 10 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 4
Concavenator Concavenator corcovatus vs Camptosaurus Camptosaurus dispar
Camptosaurus · reference · 5 m Concavenator · true length · 6 m 1.2× longer than the camptosaurus
Concavenator is represented here by a selected estimated total length of 6 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 5
Europasaurus Europasaurus holgeri vs Huayangosaurus Huayangosaurus taibaii
Huayangosaurus · reference · 4.5 m Europasaurus · true length · 6.2 m 1.4× longer than the huayangosaurus
Europasaurus is represented here by a selected estimated total length of 6.2 m. Dinosaur reconstructions vary; this is the published estimate 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.