A genus of extinct sauropod dinosaur from the Late Jurassic period.
From 'atlanto-' (possibly referring to the atlas vertebra's size relative to body) + 'saurus' (Greek 'sauros', lizard).
Atlantosaurus was one of the longest land animals ever, and naming it involved the Greek word 'saurus' which appears in hundreds of dinosaur names, making dino-vocabulary predictable across languages.
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