ALL ANSWERS · DINOSAURS · DAILY No. 36 · OCTOBER 9, 2026
Size It Up Dinosaurs answer: October 9
The five Dinosaurs silhouettes for October 9, 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 36 ran from a compsognathus (70 cm) to a brachiosaurus (22 m). The widest gap was round 5, Compsognathus against Huayangosaurus, at 6.4×; the closest call was round 3, Styracosaurus against Australovenator, only 1.1× 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
Iguanodon Iguanodon bernissartensis vs Carnotaurus Carnotaurus sastrei
Carnotaurus · reference · 8 m Iguanodon · true length · 10 m 1.3× longer than the carnotaurus
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 2
Abelisaurus Abelisaurus comahuensis vs Gallimimus Gallimimus bullatus
Gallimimus · reference · 6 m Abelisaurus · true length · 9 m 1.5× longer than the gallimimus
Abelisaurus is represented here by a selected estimated total length of 9 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 3
Styracosaurus Styracosaurus albertensis vs Australovenator Australovenator wintonensis
Australovenator · reference · 5 m Styracosaurus · true length · 5.5 m 1.1× longer than the australovenator
Styracosaurus is represented here by a selected estimated total length of 5.5 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 4
Brachiosaurus Brachiosaurus altithorax vs Concavenator Concavenator corcovatus
Concavenator · reference · 6 m Brachiosaurus · true length · 22 m 3.7× longer than the concavenator
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 5
Compsognathus Compsognathus longipes vs Huayangosaurus Huayangosaurus taibaii
Huayangosaurus · reference · 4.5 m Compsognathus · true length · 70 cm 6.4× shorter than the huayangosaurus
Compsognathus is represented here by a selected estimated total length of 0.7 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.