Size It Up

ALL ANSWERS · DINOSAURS · DAILY No. 16 · SEPTEMBER 19, 2026

Size It Up Dinosaurs answer: September 19

The five Dinosaurs silhouettes for September 19, 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 16 ran from a protoceratops (1.8 m) to a brachiosaurus (22 m). The widest gap was round 1, Protoceratops against Baryonyx, at 5.6×; the closest call was round 5, Triceratops against Ankylosaurus, only 1.1× apart — the kind of round that separates a 90 from a 60.

  1. ROUND 1

    Protoceratops Protoceratops andrewsi vs Baryonyx Baryonyx walkeri

    Baryonyx · reference · 10 m
    Protoceratops · true length · 1.8 m

    5.6× shorter than the baryonyx

    Protoceratops is represented here by a selected estimated total length of 1.8 m. Dinosaur reconstructions vary; this is the source value used for this comparison.

  2. ROUND 2

    Zuniceratops Zuniceratops christopheri vs Dromaeosaurus Dromaeosaurus albertensis

    Dromaeosaurus · reference · 1.8 m
    Zuniceratops · true length · 3.5 m

    1.9× longer than the dromaeosaurus

    Zuniceratops is represented here by a selected estimated total length of 3.5 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.

  3. ROUND 3

    Alioramus Alioramus remotus vs Giganotosaurus Giganotosaurus carolinii

    Giganotosaurus · reference · 13 m
    Alioramus · true length · 6 m

    2.2× shorter than the giganotosaurus

    Alioramus is represented here by a selected estimated total length of 6 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.

  4. ROUND 4

    Huayangosaurus Huayangosaurus taibaii vs Brachiosaurus Brachiosaurus altithorax

    Brachiosaurus · reference · 22 m
    Huayangosaurus · true length · 4.5 m

    4.9× shorter than the brachiosaurus

    Huayangosaurus is represented here by a selected estimated total length of 4.5 m. Dinosaur reconstructions vary; this is the published estimate used for this comparison.

  5. ROUND 5

    Triceratops Triceratops horridus vs Ankylosaurus Ankylosaurus magniventris

    Ankylosaurus · reference · 8 m
    Triceratops · true length · 9 m

    1.1× longer than the ankylosaurus

    Triceratops is represented here by a selected estimated total length of 9 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.

Play today’s fivePlay unlimited
Choose a categoryPLAYING DAILY
MixedAnimals, planets and everyday things. AnimalsLength, height or wingspan — every round names the axis. GeographyEast–west or north–south span, never area. Pop CultureCheck the version. Compare the measured dimension. VehiclesLength end to end, or height for the ones that stand upright. DinosaursCompare estimated body length, from snout to tail tip. SpaceCompare body diameter. Rings and orbital distances are excluded. Everyday ObjectsLength, height or width — every round names the axis. InsectsBody length or wingspan — read the named measurement. LandmarksRead the named height, length or main span — including its endpoints. Food & DrinkRead the selected size and axis — length, diameter or container height.
Browse all categories →

Suggest a category

No account or email needed. Suggestions help us choose what to build.