ALL ANSWERS · DINOSAURS · DAILY No. 28 · OCTOBER 1, 2026
Size It Up Dinosaurs answer: October 1
The five Dinosaurs silhouettes for October 1, 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 28 ran from an ornitholestes (2 m) to a brachiosaurus (22 m). The widest gap was round 3, Parasaurolophus against Ornitholestes, at 4.5×; the closest call was round 4, Allosaurus against Deinocheirus, only 1.0× 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
Eotyrannus Eotyrannus lengi vs Pachycephalosaurus Pachycephalosaurus wyomingensis
Pachycephalosaurus · reference · 3 m Eotyrannus · true length · 5 m 1.7× longer than the pachycephalosaurus
Eotyrannus 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 Anchiceratops Anchiceratops ornatus
Anchiceratops · reference · 6 m Brachiosaurus · true length · 22 m 3.7× longer than the anchiceratops
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
Parasaurolophus Parasaurolophus walkeri vs Ornitholestes Ornitholestes hermanni
Ornitholestes · reference · 2 m Parasaurolophus · true length · 9 m 4.5× longer than the ornitholestes
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
Allosaurus Allosaurus fragilis vs Deinocheirus Deinocheirus mirificus
Deinocheirus · reference · 10 m Allosaurus · true length · 9.7 m 1.0× shorter than the deinocheirus
Allosaurus is represented here by a selected estimated total length of 9.7 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 5
Oviraptor Oviraptor philoceratops vs Ankylosaurus Ankylosaurus magniventris
Ankylosaurus · reference · 8 m Oviraptor · true length · 2 m 4.0× shorter than the ankylosaurus
Oviraptor is represented here by a selected estimated total length of 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.