Late Cretaceous
Argentinosaurus
An enormous animal from a few enormous bones
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The largest dinosaurs
Meet some of prehistory’s giants. A longer neck, a heavier body and a more complete skeleton tell different stories.
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8 species to explore
Cretaceous
Patagotitan
Its fossils place it among the largest known land animals.
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Cretaceous
Dreadnoughtus
It was described in 2014 from fossils found in Santa Cruz, Argentina.
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Jurassic
Turiasaurus
Teruel preserves evidence that Europe was also a land of giant sauropods.
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Late Cretaceous
Notocolossus
Notocolossus was a giant titanosaur with unusually informative hindfoot material.
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Jurassic
Mamenchisaurus
Its skull was tiny compared to its enormous body and long neck.
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Late Jurassic
Brachiosaurus
Long front legs shaped its towering profile
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Late Jurassic
Diplodocus
A long neck, a longer story in its tail bones
Explore the speciesStylized, AI-generated Dinosgacha game artwork. Colours and growth stages are artistic interpretations, not scientific reconstructions.
A closer look
The largest dinosaurs, beyond the artwork.
The largest known land animals were sauropod dinosaurs. This selection brings together notable giants in the Dinosgacha collection, including titanosaurs such as Argentinosaurus, Patagotitan and Notocolossus. It is not an ordered ranking: a very long dinosaur need not have been the heaviest.
Fossil skeletons are often incomplete, so researchers estimate missing proportions by comparing related animals. Different reconstruction methods can produce different body-mass estimates. Patagotitan preserves substantial material, while Argentinosaurus is known from fewer bones. Even familiar size figures should be treated as estimates rather than exact measurements.
Which dinosaur was the biggest?
Argentinosaurus and Patagotitan are among the main contenders, but “biggest” needs a definition. Length, height and body mass measure different things, and incomplete remains prevent a simple, permanent winner.
Why not give these dinosaurs a precise size ranking?
An apparently small difference may be narrower than the uncertainty in the reconstruction. Dreadnoughtus, for example, has received substantially different mass estimates from different methods. Comparing the evidence is more useful than presenting every estimate as an exact score.