ALL ANSWERS · DINOSAURS · DAILY No. 19 · SEPTEMBER 22, 2026
Size It Up Dinosaurs answer: September 22
The five Dinosaurs silhouettes for September 22, 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 19 ran from a dromaeosaurus (1.8 m) to a tyrannosaurus rex (12 m). The widest gap was round 1, Baryonyx against Dromaeosaurus, at 5.6×; the closest call was round 4, Tyrannosaurus rex against Deinocheirus, 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
Baryonyx Baryonyx walkeri vs Dromaeosaurus Dromaeosaurus albertensis
Dromaeosaurus · reference · 1.8 m Baryonyx · true length · 10 m 5.6× longer than the dromaeosaurus
Baryonyx 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
Ouranosaurus Ouranosaurus nigeriensis vs Albertosaurus Albertosaurus sarcophagus
Albertosaurus · reference · 9 m Ouranosaurus · true length · 7 m 1.3× shorter than the albertosaurus
Ouranosaurus is represented here by a selected estimated total length of 7 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.
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ROUND 3
Pachycephalosaurus Pachycephalosaurus wyomingensis vs Lambeosaurus Lambeosaurus lambei
Lambeosaurus · reference · 9 m Pachycephalosaurus · true length · 3 m 3.0× shorter than the lambeosaurus
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
Tyrannosaurus rex Tyrannosaurus rex vs Deinocheirus Deinocheirus mirificus
Deinocheirus · reference · 10 m Tyrannosaurus rex · true length · 12 m 1.2× longer than the deinocheirus
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 5
Deinonychus Deinonychus antirrhopus vs Iguanodon Iguanodon bernissartensis
Iguanodon · reference · 10 m Deinonychus · true length · 3.4 m 2.9× shorter than the iguanodon
Deinonychus is represented here by a selected estimated total length of 3.4 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.