ALL ANSWERS · DINOSAURS · DAILY No. 47 · OCTOBER 20, 2026
Size It Up Dinosaurs answer: October 20
The five Dinosaurs silhouettes for October 20, 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 47 ran from a hypsilophodon (2 m) to an apatosaurus (21 m). The widest gap was round 3, Parasaurolophus against Hypsilophodon, at 4.5×; the closest call was round 2, Alioramus 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
Apatosaurus Apatosaurus louisae vs Styracosaurus Styracosaurus albertensis
Styracosaurus · reference · 5.5 m Apatosaurus · true length · 21 m 3.8× longer than the styracosaurus
Apatosaurus is represented here by a selected estimated total length of 21 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 2
Alioramus Alioramus remotus vs Camptosaurus Camptosaurus dispar
Camptosaurus · reference · 5 m Alioramus · true length · 6 m 1.2× longer than the camptosaurus
Alioramus 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 3
Parasaurolophus Parasaurolophus walkeri vs Hypsilophodon Hypsilophodon foxii
Hypsilophodon · reference · 2 m Parasaurolophus · true length · 9 m 4.5× longer than the hypsilophodon
Parasaurolophus is represented here by a selected estimated total length of 9 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 4
Yutyrannus Yutyrannus huali vs Torvosaurus Torvosaurus tanneri
Torvosaurus · reference · 10 m Yutyrannus · true length · 7.5 m 1.3× shorter than the torvosaurus
Yutyrannus is represented here by a selected estimated total length of 7.5 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 5
Ankylosaurus Ankylosaurus magniventris vs Giganotosaurus Giganotosaurus carolinii
Giganotosaurus · reference · 13 m Ankylosaurus · true length · 8 m 1.6× shorter than the giganotosaurus
Ankylosaurus is represented here by a selected estimated total length of 8 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.