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|Full name||Alvarezsaurus calvoli|
|When it lived||87-65million years ago|
|Where it lived||Argentina|
Alvarezsaurus had an appearance much like a bird. It is covered in feathers which are quite bight around the head. It has giant eyes for hunting at night. Alvarezsaurus was about 6 feet long. Alvarezsaurus was eat the baby Argentinosideions, too.
Alvarezsaurus lives in packs. They have a taste for eggs and baby dinosaurs.