Fast Facts 
Type: Dinosaur
Diet:  Insectivore.
Size: Unavailable
Protection status: Extinct
Achillesaurus has been identified as a basal alvarezsaur that lived in Argentina during the late Cretaceous,‭ ‬but there is now some question to its validity.‭ ‬Achillesaurus was thought to have lived alongside the type genus of the alvarezsauridae,‭ ‬Alvarezsaurus.‭ ‬A‭ ‬2012‭ ‬study by Makovicky et al.‭ ‬however has raised the notion that Achillesaurus and Alvarezsaurus may in fact be one and the same dinosaur.‭ ‬If so then Achillesaurus would become a synonym of Alvarezsaurus.

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