ALL ANSWERS · DINOSAURS · DAILY No. 34 · OCTOBER 7, 2026
Size It Up Dinosaurs answer: October 7
The five Dinosaurs silhouettes for October 7, 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 34 ran from an ornitholestes (2 m) to a mamenchisaurus (22 m). The widest gap was round 3, Pachycephalosaurus against Brontosaurus, at 7.3×; the closest call was round 1, Carnotaurus against Yangchuanosaurus, only 1.3× 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
Carnotaurus Carnotaurus sastrei vs Yangchuanosaurus Yangchuanosaurus shangyouensis
Yangchuanosaurus · reference · 10 m Carnotaurus · true length · 8 m 1.3× shorter than the yangchuanosaurus
Carnotaurus is represented here by a selected estimated total length of 8 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 2
Gigantoraptor Gigantoraptor erlianensis vs Mamenchisaurus Mamenchisaurus hochuanensis
Mamenchisaurus · reference · 22 m Gigantoraptor · true length · 8 m 2.8× shorter than the mamenchisaurus
Gigantoraptor is represented here by a selected estimated total length of 8 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 3
Pachycephalosaurus Pachycephalosaurus wyomingensis vs Brontosaurus Brontosaurus excelsus
Brontosaurus · reference · 22 m Pachycephalosaurus · true length · 3 m 7.3× shorter than the brontosaurus
Pachycephalosaurus is represented here by a selected estimated total length of 3 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 4
Dilophosaurus Dilophosaurus wetherilli vs Eotyrannus Eotyrannus lengi
Eotyrannus · reference · 5 m Dilophosaurus · true length · 7 m 1.4× longer than the eotyrannus
Dilophosaurus is represented here by a selected estimated total length of 7 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 5
Ornitholestes Ornitholestes hermanni vs Plateosaurus Plateosaurus
Plateosaurus · reference · 7 m Ornitholestes · true length · 2 m 3.5× shorter than the plateosaurus
Ornitholestes 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.