Anatosaurus is an invalid genus of hadrosaurid dinosaur, regarded by most scientists as a junior synonym of Edmontosaurus annectens.
In The Land Before TimeAnatosaurus is one of the three official identifications for Ducky's species, alongside Saurolophus and Parasaurolophus. The origin of the ID stems from a script for the original The Land Before Time, wherein Ducky's kind are consistently referred to as "anatosaurs", as well as concept art referring to them as such. All succeeding material refers to the them as Parasaurolophus and Saurolophus
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