ALL ANSWERS · DINOSAURS · DAILY No. 55 · OCTOBER 28, 2026
Size It Up Dinosaurs answer: October 28
The five Dinosaurs silhouettes for October 28, 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 55 ran from an alvarezsaurus (2 m) to a carcharodontosaurus (12.5 m). The widest gap was round 3, Alvarezsaurus against Albertosaurus, at 4.5×; the closest call was round 5, Euoplocephalus against Parasaurolophus, 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
Melanorosaurus Melanorosaurus readi vs Chasmosaurus Chasmosaurus belli
Chasmosaurus · reference · 5 m Melanorosaurus · true length · 12 m 2.4× longer than the chasmosaurus
Melanorosaurus is represented here by a selected estimated total length of 12 m. This is the museum directory estimate used for this comparison; individual animals and reconstructions vary.
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ROUND 2
Tyrannosaurus rex Tyrannosaurus rex vs Carnotaurus Carnotaurus sastrei
Carnotaurus · reference · 8 m Tyrannosaurus rex · true length · 12 m 1.5× longer than the carnotaurus
Tyrannosaurus rex is represented here by a selected estimated total length of 12 m. Dinosaur reconstructions vary; this is the source value used for this comparison.
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ROUND 3
Alvarezsaurus Alvarezsaurus calvoi vs Albertosaurus Albertosaurus sarcophagus
Albertosaurus · reference · 9 m Alvarezsaurus · true length · 2 m 4.5× shorter than the albertosaurus
Alvarezsaurus is represented here by a selected estimated total length of 2 m. This is the museum directory estimate used for this comparison; individual animals and reconstructions vary.
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ROUND 4
Abelisaurus Abelisaurus comahuensis vs Carcharodontosaurus Carcharodontosaurus
Carcharodontosaurus · reference · 12.5 m Abelisaurus · true length · 9 m 1.4× shorter than the carcharodontosaurus
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 5
Euoplocephalus Euoplocephalus tutus vs Parasaurolophus Parasaurolophus walkeri
Parasaurolophus · reference · 9 m Euoplocephalus · true length · 7 m 1.3× shorter than the parasaurolophus
Euoplocephalus is represented here by a selected estimated total length of 7 m. This is the museum directory estimate used for this comparison; individual animals and reconstructions vary.
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.